FR4645E - Microtéléphone - Google Patents

Microtéléphone

Info

Publication number
FR4645E
FR4645E FR4645A FR4645DA FR4645E FR 4645 E FR4645 E FR 4645E FR 4645 A FR4645 A FR 4645A FR 4645D A FR4645D A FR 4645DA FR 4645 E FR4645 E FR 4645E
Authority
FR
France
Prior art keywords
microphone
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
FR4645A
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.)
CIE D APP ELECTR
Original Assignee
CIE D APP ELECTR
Publication date
Application granted granted Critical
Publication of FR4645E publication Critical patent/FR4645E/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
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR4645A Microtéléphone Expired FR4645E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR341035T

Publications (1)

Publication Number Publication Date
FR4645E true FR4645E (fr) 1905-09-02

Family

ID=8891865

Family Applications (2)

Application Number Title Priority Date Filing Date
FR4645A Expired FR4645E (fr) Microtéléphone
FR341035A Expired FR341035A (fr) 1904-03-08 Microtéléphone

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR341035A Expired FR341035A (fr) 1904-03-08 Microtéléphone

Country Status (2)

Country Link
DE (1) DE171536C (fr)
FR (2) FR341035A (fr)

Also Published As

Publication number Publication date
FR341035A (fr) 1904-07-27
DE171536C (fr)

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