Circumscribing apparatus
CA 2202950 C · Owner: Tutty, Larry · Inventors: Tutty, Larry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circumscribing apparatus for marking a circular reference line about a cylindrical object has a first side. A first frame member has two spaced-apart guide members extending outwardly on the first side of the apparatus. The two guide members fall along a first straight line. A second frame member extends outwardly from the first frame member to a position on a second straight line which is perpendicular to the first line. A scribe is connected to the second member adjacent the position and has a marker extending outwardly on the first side of the apparatus. The apparatus can be used in conjunction with a wrap-around sleeve placed about the cylindrical object. The sleeve has a straight …
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 April 17, 1997 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2019.
- 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.