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FR650954A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR650954A
FR650954A FR650954DA FR650954A FR 650954 A FR650954 A FR 650954A FR 650954D A FR650954D A FR 650954DA FR 650954 A FR650954 A FR 650954A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
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.)
J CARPENTIER ATEL
Original Assignee
J CARPENTIER ATEL
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 J CARPENTIER ATEL filed Critical J CARPENTIER ATEL
Application granted granted Critical
Publication of FR650954A publication Critical patent/FR650954A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR650954D 1927-08-22 1927-08-22 Improvements to telephone systems Expired FR650954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR650954T 1927-08-22

Publications (1)

Publication Number Publication Date
FR650954A true FR650954A (en) 1929-02-13

Family

ID=9004287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR650954D Expired FR650954A (en) 1927-08-22 1927-08-22 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR650954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721896A (en) * 1949-07-27 1955-10-25 Foot Victor Albert Sound-reproducing systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721896A (en) * 1949-07-27 1955-10-25 Foot Victor Albert Sound-reproducing systems

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