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Expired Canadian patentCanada

Wet surface treating device and element therefor

CA 1215841 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Freerks, Conrad T.

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Abstract From the Canadian patent

Wet Surface Treating Device and Element Therefor Abstract of the Disclosure, A rotabable element and a surface treating device including the same are provided. The rotatable element is capable of being mounted on the end of the output shaft of a conventional surface treating device such as an orbiting, disc sander, an orbital sander a polisher (e.g. hand-held, or floor polisher) floor buffer or scrubber etc. to, provide a device modified according to the invention. The element comprises a first surface including a shaft mounting means for rotation of the element about an axis generally transverse to the first surface and an opposite second surface comprising or being capable of including a …

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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 December 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 14, 1983
GrantedDecember 30, 1986
Term endedDecember 30, 2003
Patent numberCA 1215841 A
Classification (IPC)B24B23/02 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedDec 14, 1983Patent grantedDec 30, 1986Term endedDec 30, 2003

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