FR642963A - Microtéléphone - Google Patents

Microtéléphone

Info

Publication number
FR642963A
FR642963A FR642963DA FR642963A FR 642963 A FR642963 A FR 642963A FR 642963D A FR642963D A FR 642963DA FR 642963 A FR642963 A FR 642963A
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
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR642963A publication Critical patent/FR642963A/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)
  • Toys (AREA)
FR642963D 1926-10-27 1927-10-25 Microtéléphone Expired FR642963A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE279848T 1926-10-27

Publications (1)

Publication Number Publication Date
FR642963A true FR642963A (fr) 1928-09-07

Family

ID=31893781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR642963D Expired FR642963A (fr) 1926-10-27 1927-10-25 Microtéléphone

Country Status (3)

Country Link
FR (1) FR642963A (fr)
GB (1) GB279848A (fr)
NL (1) NL23290C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1293708C (fr) * 1987-10-02 1991-12-31 Jeffrey B. Anderson Emballage sous bulle, et sa preparation

Also Published As

Publication number Publication date
NL23290C (fr)
GB279848A (fr) 1928-03-29

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