AU2172925A - Improvements in sound amplifiers for talking machines, telephone receivers and like instruments - Google Patents

Improvements in sound amplifiers for talking machines, telephone receivers and like instruments

Info

Publication number
AU2172925A
AU2172925A AU21729/25A AU2172925A AU2172925A AU 2172925 A AU2172925 A AU 2172925A AU 21729/25 A AU21729/25 A AU 21729/25A AU 2172925 A AU2172925 A AU 2172925A AU 2172925 A AU2172925 A AU 2172925A
Authority
AU
Australia
Prior art keywords
instruments
telephone receivers
talking machines
sound amplifiers
amplifiers
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.)
Pending
Application number
AU21729/25A
Inventor
Henry Ball I'reuerick
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU2172925A publication Critical patent/AU2172925A/en
Pending legal-status Critical Current

Links

AU21729/25A 1925-08-04 Improvements in sound amplifiers for talking machines, telephone receivers and like instruments Pending AU2172925A (en)

Publications (1)

Publication Number Publication Date
AU2172925A true AU2172925A (en) 1992-02-09

Family

ID=

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