PATENTSCOPE will be unavailable a few hours for maintenance reason on Monday 03.02.2020 at 10:00 AM CET
Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1984000270) APPARATUS FOR CONTROLLING THE APPLICATION OF TELEPHONE LINE POWER IN A TELEPHONE SET
Available information on National Phase entries(more information)
OfficeEntry DateNational NumberNational Status
European Patent Office 27.02.19841983900603Published: 11.07.1984
Granted: 03.12.1986