Container attachment device for applying plaster or cement to a tape
CA 2013439 C · Owner: Ovens, Melvin L. · Inventors: Ovens, Melvin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container attachment device for applying plaster or cement to a tape passes the tape through a pail of wet cement or plaster and has a doctor blade to control the thickness and evenness of the wet cement on the tape. The device comprises an elongate housing having a clip to engage the side of a pail or the like adapted to contain wet cement or the like, the housing extending into the interior of the pail. An arm extends outwards from a top portion of the housing above the clip. The arm has a support adapted to hold a roll of tape. Rollers are provided on the elongate body for guiding tape from the roll down to the lower end of the elongate housing in the pail, and upwards out of the pail, …
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
- Filed March 29, 1990 and granted October 8, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2012.
- 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.