[go: up one dir, main page]

FR25747E - Improvements in electrical installations, such as, in particular those for telegraphy and high-frequency telephony comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit - Google Patents

Improvements in electrical installations, such as, in particular those for telegraphy and high-frequency telephony comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit

Info

Publication number
FR25747E
FR25747E FR25747DA FR25747E FR 25747 E FR25747 E FR 25747E FR 25747D A FR25747D A FR 25747DA FR 25747 E FR25747 E FR 25747E
Authority
FR
France
Prior art keywords
telegraphy
lamps
oscillating circuit
particular those
electrical installations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Georges-Armand Beauvais
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR25747E publication Critical patent/FR25747E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
FR25747D 1921-12-12 1921-12-12 Improvements in electrical installations, such as, in particular those for telegraphy and high-frequency telephony comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit Expired FR25747E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR420289X 1921-12-12

Publications (1)

Publication Number Publication Date
FR25747E true FR25747E (en) 1923-05-17

Family

ID=8898454

Family Applications (1)

Application Number Title Priority Date Filing Date
FR25747D Expired FR25747E (en) 1921-12-12 1921-12-12 Improvements in electrical installations, such as, in particular those for telegraphy and high-frequency telephony comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit

Country Status (2)

Country Link
DE (1) DE420289C (en)
FR (1) FR25747E (en)

Also Published As

Publication number Publication date
DE420289C (en) 1925-10-20

Similar Documents

Publication Publication Date Title
FR25747E (en) Improvements in electrical installations, such as, in particular those for telegraphy and high-frequency telephony comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit
FR537053A (en) Improvements to electrical switches and circuit breakers
FR503942A (en) Improvements in electrical installations, such as, in particular, those for telegraphy and high-frequency telephony, comprising lamps with three electrodes intended to generate sustained waves in an oscillating circuit
ES77733A1 (en) Provision of connections for telegraphy and multiple telephony with high frequency by conductors.
FR526685A (en) Improvements to printing telegraph devices
AT87332B (en) Conductor connection to graphite and carbon electrodes.
FR522477A (en) Improvements to electrical devices with overvoltages, of the interval type
FR515319A (en) Improvements made to electrical devices (particularly with regard to their cooling)
ES69666A1 (en) Device to reinforce telephone currents and other electrical oscillations.
FR501851A (en) Improvements to transmissions by high frequency currents, and in particular to telephone transmissions
DK33223C (en) Telephony or Telegraphy device with high frequency electrical oscillations.
FR529874A (en) Improvements to telephone and wave telegraphy systems
FR497820A (en) Improvements to telephone and telegraph cables
FR528653A (en) Improvements in telegraphy and line telephony using high frequency currents
DK33443C (en) Heavily evacuated Discharge Pipe with Electrical Source and Anode.
FR575897A (en) Improvements to electrical circuit breakers and similar devices
AU36321A (en) Improvements in and relating to electron discharge devices and circuit arrangements employing same for telephony wireless telegraphy production of alternating currents and other purposes
FR508688A (en) Improvements to pumps and similar devices
ES83778A2 (en) Improvements in electrical installations, especially in telegraphy and high frequency telephony, containing three-electrode lamps designed to generate standing waves in an oscillating circuit.
FR537056A (en) New developments in high frequency telephony
FR554003A (en) Use of vacuum as an insulator in the construction of high voltage electrical devices
FR522029A (en) Improvements in thermionic devices for telegraphy and wireless telephony
AT91000B (en) Facility for multiple telegraphy and telephony with high-frequency currents.
FR576743A (en) Improvements to electrical circuit breakers and similar components
FR516296A (en) Improvements to the bows used in telegraphy and wireless telephony