The complete scaffolders wrench
CA 2389159 A1 · Owner: Maclachlan, Randal Alvin · Inventors: Maclachlan, Randal Alvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This wrench is designed to take the, place of a cresent wrench now used. The cresent wrench does not keep the size intended & most often ruins the nuts from slippage. This wrench also takes the place of 6 to 8 different wrenches. This wrench has all the sizes for all components of scaffolding as well as all additional parts used. With this wrench the scaffolder does not need any other wrench, The design & shape of this wrench makes the scaffolder work with the most ease & speed.
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 June 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2024.
- 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.