Expired Canadian patentCanada
Spiral seam for multiple layer flat warp monofilament fabrics
CA 1257798 A · Owner: Albany International Corp. · Inventors: Luciano, William A.; Cosciani, Mary
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of a spiral seam construction to join together the ends of a flat woven papermaker's felt having flat monofilament lengthwise yarns of a synthetic polymeric, resin improves the resistance of the seam to flex fatigue.
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 July 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 25, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1986
GrantedJuly 25, 1989
Term endedJuly 25, 2006
Patent numberCA 1257798 A
Classification (IPC)D03D25/00 +2 more
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.