Methods and apparatus for spreading semi-liquid compositions on a base surface
CA 1106243 A · Owner: Armerad Betong Vagforbattringar Ab · Inventors: Lindqvist, Bengt-Erik; Spetz, Harald K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plate having a long handle attached thereto is used for spreading a semi-composition over a base surface the thickness, of the layer being determined by a supporting spherical wheel. Another plate having a long handle is used for levelling the surface of the composition which is spread according to a pattern of juxtaposed strips.
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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.