Construction machine with laser measuring instrument
CA 2232691 C · Owner: Ono, Tomoaki · Inventors: Ono, Tomoaki; Tozawa, Shoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A construction machine (10) with a laser measuring instrument which includes a construction machine body, a working apparatus, and a manually operable member for driving a cylinder apparatus of the working apparatus to operate a plurality of arm members and an end working member is constructed such that it comprises an array type laser receiver (114) mounted on the arm member positioned on the free end side for receiving a laser beam parallel to an aimed floor face irradiated from a laser apparatus (120) disposed at a position spaced away from the construction machine (10) posture detection means (3-1 to 3-3, 4) for detecting a posture of the construction machine, and control means (2) for …
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 March 14, 1997 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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.