FR339682A - Improvements to telephone devices - Google Patents

Improvements to telephone devices

Info

Publication number
FR339682A
FR339682A FR339682DA FR339682A FR 339682 A FR339682 A FR 339682A FR 339682D A FR339682D A FR 339682DA FR 339682 A FR339682 A FR 339682A
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
Graham
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR339682A publication Critical patent/FR339682A/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)
FR339682D 1904-01-18 1904-01-18 Improvements to telephone devices Expired FR339682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR339682T 1904-01-18

Publications (1)

Publication Number Publication Date
FR339682A true FR339682A (en) 1904-06-16

Family

ID=1388848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR339682D Expired FR339682A (en) 1904-01-18 1904-01-18 Improvements to telephone devices

Country Status (1)

Country Link
FR (1) FR339682A (en)

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