BE585941A - Microphone circuit for hands-free devices - Google Patents

Microphone circuit for hands-free devices

Info

Publication number
BE585941A
BE585941A BE585941A BE585941A BE585941A BE 585941 A BE585941 A BE 585941A BE 585941 A BE585941 A BE 585941A BE 585941 A BE585941 A BE 585941A BE 585941 A BE585941 A BE 585941A
Authority
BE
Belgium
Prior art keywords
hands
microphone circuit
free devices
free
devices
Prior art date
Application number
BE585941A
Other languages
Dutch (nl)
Inventor
G Leichter
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of BE585941A publication Critical patent/BE585941A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
BE585941A 1958-12-23 1959-12-23 Microphone circuit for hands-free devices BE585941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST14605A DE1104561B (en) 1958-12-23 1958-12-23 Circuit arrangement for telephone subscriber stations

Publications (1)

Publication Number Publication Date
BE585941A true BE585941A (en) 1960-06-23

Family

ID=7456409

Family Applications (1)

Application Number Title Priority Date Filing Date
BE585941A BE585941A (en) 1958-12-23 1959-12-23 Microphone circuit for hands-free devices

Country Status (2)

Country Link
BE (1) BE585941A (en)
DE (1) DE1104561B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB976179A (en) * 1963-07-30 1964-11-25 Telephone Mfg Co Ltd Improvements in and relating to loudspeaking telephone systems and apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE956060C (en) * 1954-04-22 1957-01-10 Siemens Ag Telephone station

Also Published As

Publication number Publication date
DE1104561B (en) 1961-04-13

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