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Expired Canadian patentCanada

Filter sector with new channelling and reinforcement

CA 1069058 A · Owner: Plastic Techniques · Inventors: Moore, Richard D.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure An improved filter sector which provides an improved fluid flow pattern along the sides of the filter by interconnecting each neck groove with a plurality of diagonal grooves formed on the filter sides. The improved filter sector may be molded Of a suitable plastic material and improved structural rigidity may be imparted to the molded filter sector which is a hollow structure by providing a plurality of through-posts molded between the molded plastic providing the sides of the sector by providing a, plurality of metal rods molded integrally and internally of the sector and by filling the hollow interior of the molded plastic sector with a second predetermined …

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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069058 A
Classification (IPC)B01D29/39

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.