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FR681697A - Improvements in telegraph and radiotelegraph transmission devices - Google Patents

Improvements in telegraph and radiotelegraph transmission devices

Info

Publication number
FR681697A
FR681697A FR681697DA FR681697A FR 681697 A FR681697 A FR 681697A FR 681697D A FR681697D A FR 681697DA FR 681697 A FR681697 A FR 681697A
Authority
FR
France
Prior art keywords
radiotelegraph
telegraph
transmission devices
transmission
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brev Italiani Esteri S A B I E
Original Assignee
Brev Italiani Esteri S A B I E
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 by Brev Italiani Esteri S A B I E filed Critical Brev Italiani Esteri S A B I E
Application granted granted Critical
Publication of FR681697A publication Critical patent/FR681697A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Common Mechanisms (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
FR681697D 1928-12-14 1929-09-12 Improvements in telegraph and radiotelegraph transmission devices Expired FR681697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT345293X 1928-12-14

Publications (1)

Publication Number Publication Date
FR681697A true FR681697A (en) 1930-05-17

Family

ID=11239681

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681697D Expired FR681697A (en) 1928-12-14 1929-09-12 Improvements in telegraph and radiotelegraph transmission devices

Country Status (5)

Country Link
US (1) US1799083A (en)
BE (1) BE366080A (en)
DE (1) DE566790C (en)
FR (1) FR681697A (en)
GB (1) GB345293A (en)

Also Published As

Publication number Publication date
BE366080A (en)
GB345293A (en) 1931-03-12
US1799083A (en) 1931-03-31
DE566790C (en) 1932-12-22

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