Australian application, no grantAustralia
Improvements in semiautomatic telephone exchange systems
AU 1917003919 · Applicant: Western Electric Company Apparatus In Sucha Manner That When Limited Of Norfolk House Victoria Em Call Hasbeen Extended Toan Operator Such Bankment Inthe City Of Westminster Lon Operators Position Willbe Maintained Busy Don England
Overview
Drawings and full text
Its specification, documents and status are on IP Australia's AusPat.
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Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 10, 1917. Even if it was granted, its term would have ended by May 10, 1938.
- A pharmaceutical extension adds at most five years, so even that would have ended by May 10, 1943.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 1917
GrantedNo grant recorded
Term ended byMay 10, 1938
Application numberAU 1917003919
Classification (IPC)—
Timeline
Timeline From IP Australia dates
Sources & verification
Official IP Australia records
Everything on this page comes from the IP Australia record linked above. Data from IP Australia's IPGOD, licensed under CC BY 2.5 AU.