FR519091A - Improvements to transmitting telephone devices - Google Patents

Improvements to transmitting telephone devices

Info

Publication number
FR519091A
FR519091A FR519091A FR519091DA FR519091A FR 519091 A FR519091 A FR 519091A FR 519091 A FR519091 A FR 519091A FR 519091D A FR519091D A FR 519091DA FR 519091 A FR519091 A FR 519091A
Authority
FR
France
Prior art keywords
telephone devices
transmitting telephone
transmitting
devices
telephone
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
FR519091A
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.)
UNIVERSAL HIGH POWER TELEPHONE
Original Assignee
UNIVERSAL HIGH POWER TELEPHONE
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 UNIVERSAL HIGH POWER TELEPHONE filed Critical UNIVERSAL HIGH POWER TELEPHONE
Application granted granted Critical
Publication of FR519091A publication Critical patent/FR519091A/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
    • H04M1/02—Constructional features of telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR519091A 1919-07-03 1920-07-06 Improvements to transmitting telephone devices Expired FR519091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519091XA 1919-07-03 1919-07-03

Publications (1)

Publication Number Publication Date
FR519091A true FR519091A (en) 1921-06-04

Family

ID=21974129

Family Applications (1)

Application Number Title Priority Date Filing Date
FR519091A Expired FR519091A (en) 1919-07-03 1920-07-06 Improvements to transmitting telephone devices

Country Status (1)

Country Link
FR (1) FR519091A (en)

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