Pipefitter's protractor
CA 1204282 A · Owner: Dearman, Timothy C. · Inventors: Dearman, Timothy C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipefitter's protractor has a pair of body members each of which is capable of supporting a welder's square. The body members are relatively rotatable about an axis so as to enable the squares to occupy any selected position of angular adjustment. The squares are supported on opposite sides of their respective body members to prevent interference between the squares during rotation of the body members.
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 May 13, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 2003.
- 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.