AU4138189A - Hands-free telephone operation subscriber circuit - Google Patents

Hands-free telephone operation subscriber circuit

Info

Publication number
AU4138189A
AU4138189A AU41381/89A AU4138189A AU4138189A AU 4138189 A AU4138189 A AU 4138189A AU 41381/89 A AU41381/89 A AU 41381/89A AU 4138189 A AU4138189 A AU 4138189A AU 4138189 A AU4138189 A AU 4138189A
Authority
AU
Australia
Prior art keywords
hands
subscriber circuit
free telephone
telephone operation
operation subscriber
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.)
Abandoned
Application number
AU41381/89A
Inventor
Kenneth Alexander Manson Arton
Peter Fred Blomley
Andrew Paul Lefevre
Edward John Wemyss Whittaker
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.)
STC PLC
Original Assignee
STC PLC
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
Priority claimed from GB08416032A external-priority patent/GB2147175B/en
Application filed by STC PLC filed Critical STC PLC
Publication of AU4138189A publication Critical patent/AU4138189A/en
Abandoned legal-status Critical Current

Links

AU41381/89A 1984-06-22 1989-09-14 Hands-free telephone operation subscriber circuit Abandoned AU4138189A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08416032A GB2147175B (en) 1983-06-29 1984-06-22 Improvements in telephone instruments
GB8416032 1984-06-22

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU43229/85A Division AU4322985A (en) 1984-06-22 1985-06-03 Telephone subscriber instrument

Publications (1)

Publication Number Publication Date
AU4138189A true AU4138189A (en) 1989-12-21

Family

ID=10562861

Family Applications (2)

Application Number Title Priority Date Filing Date
AU43229/85A Abandoned AU4322985A (en) 1984-06-22 1985-06-03 Telephone subscriber instrument
AU41381/89A Abandoned AU4138189A (en) 1984-06-22 1989-09-14 Hands-free telephone operation subscriber circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AU43229/85A Abandoned AU4322985A (en) 1984-06-22 1985-06-03 Telephone subscriber instrument

Country Status (2)

Country Link
AU (2) AU4322985A (en)
ES (1) ES8700501A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU608484B2 (en) * 1987-07-06 1991-03-28 Nec Corporation Loudspeaking telephone with a variable gain circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU608484B2 (en) * 1987-07-06 1991-03-28 Nec Corporation Loudspeaking telephone with a variable gain circuit

Also Published As

Publication number Publication date
AU4322985A (en) 1986-01-02
ES8700501A1 (en) 1986-07-16
ES544437A0 (en) 1986-07-16

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