Material lifting apparatus and system
CA 2071769 A1 · Owner: Currie, Adam · Inventors: Currie, Adam; Currie, Adam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and system including a hanger device which is releasably clampable to a rod. The hanger device includes a pair of blocks each having a plurality of differently configured bore sections therein adapted for cooperating with a plurality of differently configured bore sections of the other block such that predetermined ones of the cooperating bore sections may be aligned to clamp the rod therebetween, whereby the blocks may be clamped to rods of a plurality of different configurations. One of the blocks is provided with a member for suspending a hoist. The apparatus further preferably comprises structure for connecting the hanger device to a come-along device whereby the functions of …
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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 June 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.