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AU109724B2 - Improvements in telephone instruments - Google Patents
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AU109724B2 - Improvements in telephone instruments - Google Patents

Improvements in telephone instruments

Info

Publication number
AU109724B2
AU109724B2 AU2030/39A AU203039A AU109724B2 AU 109724 B2 AU109724 B2 AU 109724B2 AU 2030/39 A AU2030/39 A AU 2030/39A AU 203039 A AU203039 A AU 203039A AU 109724 B2 AU109724 B2 AU 109724B2
Authority
AU
Australia
Prior art keywords
telephone instruments
instruments
telephone
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 - Lifetime
Application number
AU2030/39A
Inventor
Frank Stehlik Rudolph
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Filing date
Publication of AU109724B2 publication Critical patent/AU109724B2/en
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU2030/39A 1939-05-09 Improvements in telephone instruments Expired - Lifetime AU109724B2 (en)

Publications (1)

Publication Number Publication Date
AU109724B2 true AU109724B2 (en)

Family

ID=

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