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FR753605A - Maneuvering device for automatic telephone devices - Google Patents

Maneuvering device for automatic telephone devices

Info

Publication number
FR753605A
FR753605A FR753605DA FR753605A FR 753605 A FR753605 A FR 753605A FR 753605D A FR753605D A FR 753605DA FR 753605 A FR753605 A FR 753605A
Authority
FR
France
Prior art keywords
automatic telephone
telephone devices
maneuvering device
maneuvering
devices
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
Abram L Myers
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 FR753605A publication Critical patent/FR753605A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR753605D 1932-04-01 1933-04-01 Maneuvering device for automatic telephone devices Expired FR753605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US602512A US1923947A (en) 1932-04-01 1932-04-01 Operating means for automatic telephones

Publications (1)

Publication Number Publication Date
FR753605A true FR753605A (en) 1933-10-20

Family

ID=24411654

Family Applications (1)

Application Number Title Priority Date Filing Date
FR753605D Expired FR753605A (en) 1932-04-01 1933-04-01 Maneuvering device for automatic telephone devices

Country Status (2)

Country Link
US (1) US1923947A (en)
FR (1) FR753605A (en)

Also Published As

Publication number Publication date
US1923947A (en) 1933-08-22

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