Electric lamp
CA 1214202 A · Owner: N.V. Philips'Gloeilampenfabrieken · Inventors: Noteleteirs, Victor R.; Janssen, Edward J.P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electric lamp. An electric lamp according to the invention has a lamp envelope (1) which is secured at one end (5) to a lamp cap (7). In at least one of the currentsupply conductors (2, 3), which extend from the light source (4) to contacts (11) on the lamp cap a fuse, wire (10) is included. The fuse wire (10) is located inside a tube (13) of electrically insulating material which is filled with electrically insulating material and is sealed at its ends by means of a coherent mass (14).
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.