FR542433A - Improvements to phones - Google Patents

Improvements to phones

Info

Publication number
FR542433A
FR542433A FR542433DA FR542433A FR 542433 A FR542433 A FR 542433A FR 542433D A FR542433D A FR 542433DA FR 542433 A FR542433 A FR 542433A
Authority
FR
France
Prior art keywords
phones
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
George Baker Riley
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 filed Critical
Application granted granted Critical
Publication of FR542433A publication Critical patent/FR542433A/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
    • 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
    • H04M1/04—Supports for telephone transmitters or receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR542433D 1921-10-17 1921-10-17 Improvements to phones Expired FR542433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR542433T 1921-10-17

Publications (1)

Publication Number Publication Date
FR542433A true FR542433A (en) 1922-08-11

Family

ID=8930870

Family Applications (1)

Application Number Title Priority Date Filing Date
FR542433D Expired FR542433A (en) 1921-10-17 1921-10-17 Improvements to phones

Country Status (2)

Country Link
FR (1) FR542433A (en)
NL (1) NL9979C (en)

Also Published As

Publication number Publication date
NL9979C (en)

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