Air filter element; assembly; and method
CA 2210950 A1 · Owner: Saldin, Wallace Ronald · Inventors: Smith, Timothy John; Saldin, Wallace Ronald; Takach, Eugene Joseph, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter assembly having first and second opposite frame members and a filter element removably secured to the first and second frame members is provided. The filter element is preferably a pleated paper filter positioned inextension between opposite end panels. An arrangement is provided for securing the end panels to, and in extension between the first and second opposite frame, members. When the arrangement is assembled an outer frame comprising the two, frame members in the two end panels is provided. In the assembly the pleated filter, fills the area within the frame. The filter media can be conveniently removed and replaced in the frame, as desired.
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 July 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2019.
- 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.