AU151323B2 - Improvements in loud-speaking telephone equipment - Google Patents

Improvements in loud-speaking telephone equipment

Info

Publication number
AU151323B2
AU151323B2 AU38212/50A AU3821250A AU151323B2 AU 151323 B2 AU151323 B2 AU 151323B2 AU 38212/50 A AU38212/50 A AU 38212/50A AU 3821250 A AU3821250 A AU 3821250A AU 151323 B2 AU151323 B2 AU 151323B2
Authority
AU
Australia
Prior art keywords
loud
telephone equipment
speaking telephone
speaking
equipment
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
AU38212/50A
Other versions
AU3821250A (en
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU151323B2 publication Critical patent/AU151323B2/en
Publication of AU3821250A publication Critical patent/AU3821250A/en
Expired legal-status Critical Current

Links

AU38212/50A 1950-11-21 Improvements in loud-speaking telephone equipment Expired AU151323B2 (en)

Publications (2)

Publication Number Publication Date
AU151323B2 true AU151323B2 (en) 1951-01-25
AU3821250A AU3821250A (en) 1951-01-25

Family

ID=

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