Improvements in and relating to converters for supplying radio plate and filament currents from unidirectional pulsating current sources and for regulating electric circuits

Read the whole patent

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 June 10, 1926. Even if it was granted, its term would have ended by June 10, 1947.
• A pharmaceutical extension adds at most five years, so even that would have ended by June 10, 1952.
• We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.