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Expired Canadian patentCanada

Hydraulic lift

CA 1197500 A · Owner: 554072 Ontario Inc. · Inventors: Vanlierop, John G.M.

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

INVENTOR: John Vanlierop, TITLE: Hydraulic Lift ABSTRACT OF THE DISCLOSURE, A lifting device for vehicles, has two support, platforms. Scissor mechanisms connect these platforms to bases, and are actuated by hydraulic piston and cylinder assemblies. A combiner and divider valve supplies fluid to the two hydraulic cylinders. A single cross brace can be provided between the two support platforms. This ensures the two platforms operate uniformly even for, an uneven load distribution, whilst giving a clear working space.

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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 3, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 25, 1985
GrantedDecember 3, 1985
Term endedDecember 3, 2002
Patent numberCA 1197500 A
Classification (IPC)B66F3/25 +2 more

Timeline

Timeline From CIPO dates

198619881990199219941996199820002002Application filedMarch 25, 1985Patent grantedDec 3, 1985Term endedDec 3, 2002

Sources & verification

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