Web material having edge hole patterns for sprocket driving
CA 1296749 C · Owner: 901173 Ontario Limited · Inventors: Masuko, Tadayoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hole pattern for use in web material is disclosed. Such hole pattern comprises a series of regularly spaced holes adapted to receive pins from a cooperating drive sprocket. A portion of these holes are elongated and are spaced periodically therealong. A number of either the elongated or non-elongated holes are shaped so as to be bi-laterally non-symmetrical such that the directionality of these holes is visually distingishable. P12399-1
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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.