FR779313A - Téléphonie secrète simple ou multiple - Google Patents

Téléphonie secrète simple ou multiple

Info

Publication number
FR779313A
FR779313A FR779313DA FR779313A FR 779313 A FR779313 A FR 779313A FR 779313D A FR779313D A FR 779313DA FR 779313 A FR779313 A FR 779313A
Authority
FR
France
Prior art keywords
multiple secret
secret telephony
telephony
secret
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
English (en)
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.)
Radio Industrie SA
Original Assignee
Radio Industrie SA
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 Radio Industrie SA filed Critical Radio Industrie SA
Application granted granted Critical
Publication of FR779313A publication Critical patent/FR779313A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR779313D 1933-12-21 1933-12-21 Téléphonie secrète simple ou multiple Expired FR779313A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR779313T 1933-12-21

Publications (1)

Publication Number Publication Date
FR779313A true FR779313A (fr) 1935-04-02

Family

ID=9202672

Family Applications (1)

Application Number Title Priority Date Filing Date
FR779313D Expired FR779313A (fr) 1933-12-21 1933-12-21 Téléphonie secrète simple ou multiple

Country Status (2)

Country Link
US (1) US2080082A (fr)
FR (1) FR779313A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541399A (en) * 1945-11-19 1951-02-13 Blake Kenneth Electronic switch
NL112812C (fr) * 1957-12-11

Also Published As

Publication number Publication date
US2080082A (en) 1937-05-11

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