Disposable marker having plastic-sheathed fibrous ink reservoir
CA 1055892 A · Owner: Graphic Controls Corporation · Inventors: Hubbard, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Convenient disposable marker design facilitates manufacture of disposable markers at low cost within a wide range of configurations and writing capacities. Marker comprises tubular plastic-sheathed fibrous ink, reservoir material cut to predetermined length for a particular marker and capped at one end. At the opposite end a tip cap with nib projection is, sealingly mounted on the plastic sheathed reservoir material. In another form of the invention, the tubular outer body fits snugly over a tip cap projection and is sealed by an external sealing rib to flushly mate with the tip cap body. A metallic holder clip fastens the disposable marker securely tot he recorder pen arm.
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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 1996.
- 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.