FR437979A - Nouveau polyphone - Google Patents

Nouveau polyphone

Info

Publication number
FR437979A
FR437979A FR437979A FR437979DA FR437979A FR 437979 A FR437979 A FR 437979A FR 437979 A FR437979 A FR 437979A FR 437979D A FR437979D A FR 437979DA FR 437979 A FR437979 A FR 437979A
Authority
FR
France
Prior art keywords
polyphone
new
new polyphone
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
FR437979A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR437979A publication Critical patent/FR437979A/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
    • H04M1/02—Constructional features of telephone sets
    • 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)
FR437979A 1911-03-03 Nouveau polyphone Expired FR437979A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR15657T

Publications (1)

Publication Number Publication Date
FR437979A true FR437979A (fr) 1912-05-04

Family

ID=8651654

Family Applications (4)

Application Number Title Priority Date Filing Date
FR15409A Expired FR15409E (fr) Nouveau polyphone
FR17091A Expired FR17091E (fr) Nouveau polyphone
FR15657A Expired FR15657E (fr) Nouveau polyphone
FR437979A Expired FR437979A (fr) 1911-03-03 Nouveau polyphone

Family Applications Before (3)

Application Number Title Priority Date Filing Date
FR15409A Expired FR15409E (fr) Nouveau polyphone
FR17091A Expired FR17091E (fr) Nouveau polyphone
FR15657A Expired FR15657E (fr) Nouveau polyphone

Country Status (1)

Country Link
FR (4) FR437979A (fr)

Also Published As

Publication number Publication date
FR15657E (fr) 1912-08-30
FR15409E (fr) 1912-07-04
FR17091E (fr) 1913-06-19

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