Construction machine
CA 2396852 A1 · Owner: Iwasa, Kazumichi · Inventors: Yamauchi, Yuichiro; Iwasa, Kazumichi; Goto, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A construction machine comprising an engine disposed along a counterweight in which the intake piping of the engine can be passed between the counterweight and the engine without spacing the counterweight apart from the engine and outward projecting of the counterweight can be reduced. A recessed piping space (44) for passing intake piping (28) is formed in the surface (36) of the counterweight (18) facing the engine (14).
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 October 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2023.
- 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.