AU490621B2 - Improvements in or relating to microphone arrangements for use in telephone apparatus - Google Patents

Improvements in or relating to microphone arrangements for use in telephone apparatus

Info

Publication number
AU490621B2
AU490621B2 AU77280/75A AU7728075A AU490621B2 AU 490621 B2 AU490621 B2 AU 490621B2 AU 77280/75 A AU77280/75 A AU 77280/75A AU 7728075 A AU7728075 A AU 7728075A AU 490621 B2 AU490621 B2 AU 490621B2
Authority
AU
Australia
Prior art keywords
relating
telephone apparatus
microphone arrangements
microphone
arrangements
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
AU77280/75A
Other versions
AU7728075A (en
Inventor
GEORGE CARR and WALTER JOHN GEORGE MELLORS ALLAN
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.)
General Electric Co
Original Assignee
General Electric Co
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 GB1846/74A external-priority patent/GB1493591A/en
Application granted granted Critical
Publication of AU7728075A publication Critical patent/AU7728075A/en
Publication of AU490621B2 publication Critical patent/AU490621B2/en
Application filed by General Electric Co filed Critical General Electric Co
Expired legal-status Critical Current

Links

AU77280/75A 1974-01-15 1978-01-14 Improvements in or relating to microphone arrangements for use in telephone apparatus Expired AU490621B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1846/74A GB1493591A (en) 1974-01-15 1974-01-15 Microphone arrangements for use in telephone apparatus
GBGB1846/74 1974-01-15

Publications (2)

Publication Number Publication Date
AU7728075A AU7728075A (en) 1976-07-15
AU490621B2 true AU490621B2 (en) 1976-07-15

Family

ID=

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