Correction fluid dispenser
CA 2091574 A1 · Owner: Petrillo, Richard J. · Inventors: Petrillo, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A correction fluid dispenser comprising a body member (12) adapted to retain a correction fluid and a barrell (14) disposed at one end thereof for delivery of the fluid to a surface. The barrel terminates in an orifice formed by a circular rim (24) with a spherical ball (38) of greater diameter disposed at the orifice. The ball (38) is supported by a socket member (34) the ball and, socket member being spring biased toward the orifice. A problem exists in that the ball is retracted past the rim in use. A solution to this problem is providing a stop means (28) to prevent the ball from extending entirely within the rim of the orifice.
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 September 25, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2013.
- 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.