Apparatus for determining an area coverage rate
CA 2071868 A1 · Owner: Jacobs, Stephen · Inventors: Jacobs, Stephen; Rench, Quentin H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus (10) for determining an area of a surface which is traversed and treated by an object during a unit of time is configured for use with a movable object (11) that has a first axis (17) of a known length. The object is capable of movement along a second axis (19) and the first and second axes (17 19) define an, angle between them which is other than 0·. A signalling means (28) includes a sensor (27) which may be mounted in a motion-sensing relationship to the object (11) for providing a motion signal when the object (11) moves a distance along the second axis (19). The motion signal has a predetermined relationship to that distance. A timing means (45) repetitively provides a …
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 June 25, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2012.
- 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.