FR818999A - Improvements to telephone devices - Google Patents

Improvements to telephone devices

Info

Publication number
FR818999A
FR818999A FR818999DA FR818999A FR 818999 A FR818999 A FR 818999A FR 818999D A FR818999D A FR 818999DA FR 818999 A FR818999 A FR 818999A
Authority
FR
France
Prior art keywords
telephone devices
telephone
devices
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
Douglas Stuart Spens Steuart
Nina Mary Benita Douglas-Ham D
Brandon
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 FR818999A publication Critical patent/FR818999A/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
    • H04M1/04—Supports for telephone transmitters or receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR818999D 1936-03-28 1937-03-10 Improvements to telephone devices Expired FR818999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB818999X 1936-03-28

Publications (1)

Publication Number Publication Date
FR818999A true FR818999A (en) 1937-10-07

Family

ID=10527313

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818999D Expired FR818999A (en) 1936-03-28 1937-03-10 Improvements to telephone devices

Country Status (1)

Country Link
FR (1) FR818999A (en)

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