FR834633A - Turning indicator disc for automatic telephone - Google Patents

Turning indicator disc for automatic telephone

Info

Publication number
FR834633A
FR834633A FR834633DA FR834633A FR 834633 A FR834633 A FR 834633A FR 834633D A FR834633D A FR 834633DA FR 834633 A FR834633 A FR 834633A
Authority
FR
France
Prior art keywords
automatic telephone
turning indicator
indicator disc
disc
turning
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)
Inventor
Pierre Eugene Boeuf
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 filed Critical
Application granted granted Critical
Publication of FR834633A publication Critical patent/FR834633A/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
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR834633D 1937-07-31 1937-07-31 Turning indicator disc for automatic telephone Expired FR834633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR834633T 1937-07-31

Publications (1)

Publication Number Publication Date
FR834633A true FR834633A (en) 1938-11-25

Family

ID=9297226

Family Applications (1)

Application Number Title Priority Date Filing Date
FR834633D Expired FR834633A (en) 1937-07-31 1937-07-31 Turning indicator disc for automatic telephone

Country Status (1)

Country Link
FR (1) FR834633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754370A (en) * 1952-06-25 1956-07-10 William J Gauvreau Telephone attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754370A (en) * 1952-06-25 1956-07-10 William J Gauvreau Telephone attachment

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