Electromagnetic pickup tool
CA 2088038 C · Owner: Slusar, Randall J. · Inventors: Majors, Ronald O.; Annis, Jeffrey R.; Slusar, Randall J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic pickup tool includes an elongated flexible, tubular, conductive shaft connected to a handle at one end and to an electromagnet at the other end. The handle is an electrically conductive tube housing batteries and a push-button switch for connecting one battery terminal to the housing, the other battery terminal being connected to an insulated conductor which runs through the shaft for connection to one terminal of the electromagnet which is, provided with telescoping inner and outer pole pieces. A first tubular metal coupling electrically connects the handle to the shaft. A second metal tubular coupler has a diametrically slotted end which is received telescopically between the …
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 January 25, 1993 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2015.
- 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.