Method for forming a continuous footing
CA 1074136 A · Owner: Higuchi, Tadayasu · Inventors: Higuchi, Tadayasu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Inventor, Tadayasu HIGUCHI, Title of the Invention Method for forming a continuous footing Abstract of the Disclosure, A process for forming a continuous footing for building a house comprising digging trenches in accordance with the layout of a house to be built, forming a rubble and gravel bed in the trenches, placing a plurality of leveling pieces on the bed and leveling only the leveling pieces by laying sand thereunder, placing footing blocks on the leveling pieces so as to bridge them, pouring gravel in the trenches compacting, the gravel and rubble so that they are tightly compacted under the footing blocks up to the bottom of the footing blocks thereafter removing the leveling …
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 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 1997.
- 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.