Tool for removal and replacement of light bulbs
CA 2068983 A1 · Owner: Castiglione, Perry A. · Inventors: Castiglione, Perry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tool for the removal of a light bulb from a remote socket consists of a flexible cup fitted over one end of a hollow rod. The other end of the rod is fitted to a flexible elastomeric bellows adapted to expel its inner air through the cup to allow any object such as a light bulb to be gripped by the cup surface when the bellows is released.
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
- Filed May 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2014.
- 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.