Electric lamp with a sleeve-shaped cap
CA 1163308 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Hellwig, Paul; Schlagheck, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHD 79-096 6, ABSTRACT:, An electric lamp provided with a sleeve-shaped cap has an inner part in the cap, fitted to accommodate the lamp bulb. The inner part consists of a cover plate with at least two spring clips, which are attached to the inside wall of the cap by means of openings cooperating with projections protruding inwards from the sleeveshaped cap. When the inner part is inserted into the cap, the spring clips fit and lock into position by means, of the openings which correspond to the cross-section of the said projections. A heat treatment to attach the cap to the inner part is avoided by this construction,
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 March 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.