Plasma-arc welding and cutting machine
CA 1111913 A · Owner: Hosoda, Naoyoshi · Inventors: Hosoda, Takeshi; Hosoda, Naoyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plasma-arc welding and cutting machine is disclosed comprising a body, an electrode an inert, gas chamber, and a cooling water chamber with a, nozzle attached with an opening into which the electrode projects, in which the electrode is movable to and fro within the body so as to move axially within the nozzle opening.
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 November 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 1998.
- 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.