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Expired Canadian patentCanada

Storage means with shiftable units

CA 1074423 A · Owner: Estey Corporation · Inventors: Tucker, F. Philip; Becker, Sherburn M.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A series of storage stacks, such as bookcases are mounted on a track with controlled power means for moving them to provide a single aisle between any two stacks. The remaining stacks are in contact with each other, thereby conserving space and lighting means. The movement of the stacks, the lighting above the open aisle and the safety features are all automatically controlled. All controls are mounted above the floor level.

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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 March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 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—
GrantedMarch 25, 1980
Term endedMarch 25, 1997
Patent numberCA 1074423 A
Classification (IPC)G05D3/10 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 25, 1980Term endedMarch 25, 1997

Sources & verification

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