FR975644A - Perfectionnements aux combinés téléphoniques - Google Patents

Perfectionnements aux combinés téléphoniques

Info

Publication number
FR975644A
FR975644A FR975644DA FR975644A FR 975644 A FR975644 A FR 975644A FR 975644D A FR975644D A FR 975644DA FR 975644 A FR975644 A FR 975644A
Authority
FR
France
Prior art keywords
telephone handsets
handsets
telephone
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)
French (fr)
Inventor
Ernest Stewart Mclarn
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR975644A publication Critical patent/FR975644A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
FR975644D 1942-12-29 1946-01-09 Perfectionnements aux combinés téléphoniques Expired FR975644A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US261228XA 1942-12-29 1942-12-29

Publications (1)

Publication Number Publication Date
FR975644A true FR975644A (fr) 1951-03-07

Family

ID=21830049

Family Applications (1)

Application Number Title Priority Date Filing Date
FR975644D Expired FR975644A (fr) 1942-12-29 1946-01-09 Perfectionnements aux combinés téléphoniques

Country Status (3)

Country Link
BE (1) BE468890A (xx)
CH (1) CH261228A (xx)
FR (1) FR975644A (xx)

Also Published As

Publication number Publication date
BE468890A (xx)
CH261228A (de) 1949-04-30

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