Constructions having improved penetration resistance
CA 2095608 A1 · Owner: Prevorsek, Dusan C. · Inventors: Harpell, Gary A.; Prevorsek, Dusan C.; Cunningham, David V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An improved article of the type comprising a plurality of flexible fibrous layers (12a-12j) at least two of which are secured together by a securing means (14), said improvements comprising a securing means which comprises at least two adjacent paths wherein the distance between said paths is less than about 1/8 in.
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.
Why it's free to use
- Filed November 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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.