FR530245A - Perfectionnements aux téléphones - Google Patents

Perfectionnements aux téléphones

Info

Publication number
FR530245A
FR530245A FR530245DA FR530245A FR 530245 A FR530245 A FR 530245A FR 530245D A FR530245D A FR 530245DA FR 530245 A FR530245 A FR 530245A
Authority
FR
France
Prior art keywords
enhancements
phone
phone enhancements
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.)
TELEPHONE Manufacturing Co 1920 Ltd
Original Assignee
TELEPHONE Manufacturing Co 1920 Ltd
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 TELEPHONE Manufacturing Co 1920 Ltd filed Critical TELEPHONE Manufacturing Co 1920 Ltd
Application granted granted Critical
Publication of FR530245A publication Critical patent/FR530245A/fr
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
FR530245D 1920-02-05 1921-01-27 Perfectionnements aux téléphones Expired FR530245A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB359620A GB164421A (en) 1920-02-05 1920-02-05 Improvements in or relating to telephones

Publications (1)

Publication Number Publication Date
FR530245A true FR530245A (fr) 1921-12-17

Family

ID=9761303

Family Applications (1)

Application Number Title Priority Date Filing Date
FR530245D Expired FR530245A (fr) 1920-02-05 1921-01-27 Perfectionnements aux téléphones

Country Status (2)

Country Link
FR (1) FR530245A (fr)
GB (1) GB164421A (fr)

Also Published As

Publication number Publication date
GB164421A (en) 1921-06-06

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