Boat hulls
CA 1297348 C · Owner: Haines, John S. · Inventors: Haines, John S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with a boat hull. The boat hull includes a channel shaped bottom part having a keel and an undersurface having a plurality of corrugations which are located on each side of the keel thereby forming a plurality of alternating hills and valleys. Each valley has a vertex and each corrugation is V shaped in section thereby providing an oblique line and a substantially horizontal line characterized in that in section the successive lines of slope formed by adjacent oblique lines of the corrugations form a multiplicity of angles of deadrise which are all greater than the substantially constant angle of deadrise formed by joining a line through a row of vertices …
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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.