AU2469230A - Improvements relating to telephone instruments - Google Patents

Improvements relating to telephone instruments

Info

Publication number
AU2469230A
AU2469230A AU24692/30A AU2469230A AU2469230A AU 2469230 A AU2469230 A AU 2469230A AU 24692/30 A AU24692/30 A AU 24692/30A AU 2469230 A AU2469230 A AU 2469230A AU 2469230 A AU2469230 A AU 2469230A
Authority
AU
Australia
Prior art keywords
improvements relating
telephone instruments
instruments
telephone
relating
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
AU24692/30A
Inventor
Ethelbert Goodwin William
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Filing date
Publication date
Application filed by Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Publication of AU2469230A publication Critical patent/AU2469230A/en
Expired legal-status Critical Current

Links

AU24692/30A 1930-01-20 Improvements relating to telephone instruments Expired AU2469230A (en)

Publications (1)

Publication Number Publication Date
AU2469230A true AU2469230A (en) 1930-10-14

Family

ID=

Similar Documents

Publication Publication Date Title
AU2529730A (en) Improvements relating to telephone instruments
AU1774329A (en) Improvements relating to telephone instruments
AU2469130A (en) Improvements relating to telephone instruments
AU2469230A (en) Improvements relating to telephone instruments
AU2529630A (en) Improvements relating to telephone instruments
CA297812A (en) Telephone instrument
CA305490A (en) Telephone instrument
CA305716A (en) Telephone instrument
CA305246A (en) Telephone set
CA302986A (en) Telephone line
CA297714A (en) Violin
AU2797330A (en) Improvements relating to telephone systems
AU2559230A (en) Improvements relating to telephone systems
CA302206A (en) Piano
CA305300A (en) Piano
CA301089A (en) Piano
CA302289A (en) Acoustic instrument
CA303042A (en) Acoustic instrument
AU3001730A (en) Improvements in or relating to telephone transmitters
CA296334A (en) Mixture calculator
CA310909A (en) Telephone instrument
CA318320A (en) Telephone instrument
CA318321A (en) Telephone instrument
CA306683A (en) Well point
CA299779A (en) Microphone