FR330477A - Development of combined telephone devices - Google Patents

Development of combined telephone devices

Info

Publication number
FR330477A
FR330477A FR330477DA FR330477A FR 330477 A FR330477 A FR 330477A FR 330477D A FR330477D A FR 330477DA FR 330477 A FR330477 A FR 330477A
Authority
FR
France
Prior art keywords
development
telephone devices
combined telephone
combined
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
Johan Gunnar Holmstroem
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 FR330477A publication Critical patent/FR330477A/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
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR330477D 1903-01-10 1903-03-21 Development of combined telephone devices Expired FR330477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE330477X 1903-01-10

Publications (1)

Publication Number Publication Date
FR330477A true FR330477A (en) 1903-08-19

Family

ID=1380252

Family Applications (1)

Application Number Title Priority Date Filing Date
FR330477D Expired FR330477A (en) 1903-01-10 1903-03-21 Development of combined telephone devices

Country Status (1)

Country Link
FR (1) FR330477A (en)

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