Dispensing containers
CA 1233310 A · Owner: Nortel Networks Limited · Inventors: Scott, James R.; Donaldson, Michael J.; Campbell, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dispensing container for dispensing molten plastic into a mold, the container being piston operated and having an indicator to show the piston position and the volumetric capacity of the container reservoir. The indicator comprises a taut flexible elongate member secured to the piston at one end and extending exteriorly of the cylinder. A spring holds the flexible member taut and the member moves longitudinally together with piston movement. A marker on the flexible member indicates against a scale the piston position and/or reservoir capacity. -i-
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 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
- 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.