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FR516297A - Polytonic radio telegraph system - Google Patents

Polytonic radio telegraph system

Info

Publication number
FR516297A
FR516297A FR516297A FR516297DA FR516297A FR 516297 A FR516297 A FR 516297A FR 516297 A FR516297 A FR 516297A FR 516297D A FR516297D A FR 516297DA FR 516297 A FR516297 A FR 516297A
Authority
FR
France
Prior art keywords
polytonic
telegraph system
radio telegraph
radio
telegraph
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
FR516297A
Other languages
French (fr)
Inventor
Robert B Goldschmidt
Raymond Braillard
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR516297A publication Critical patent/FR516297A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
FR516297A 1919-05-21 1920-06-03 Polytonic radio telegraph system Expired FR516297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE516297X 1919-05-21

Publications (1)

Publication Number Publication Date
FR516297A true FR516297A (en) 1921-04-16

Family

ID=3871208

Family Applications (1)

Application Number Title Priority Date Filing Date
FR516297A Expired FR516297A (en) 1919-05-21 1920-06-03 Polytonic radio telegraph system

Country Status (1)

Country Link
FR (1) FR516297A (en)

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