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Expired Canadian patentCanada

Glass block panel construction and device for use in same

CA 1307898 C · Owner: Mayer, Emil · Inventors: Mayer, Emil

CIPO record

Overview

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

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Abstract From the Canadian patent

Architectural glass block walls or panels are constructed by assembling a plurality of blocks using connectors which provide securement and uniform spacing of the blocks in a width and height direction. Each connector comprises a pair of rigid, elongated members each having pair of spaced, planar opposite surfaces and a laterally, centered longitudinal groove in each surface. Each member is joined to the other member and each connector is disposed at an intersection of the corners of and in abutment with a plurality of blocks with each longitudinal groove engaging a ridge which extends around the circumference of each block. The connectors can be secured to the blocks with an adhesive …

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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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
  • 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 4, 1987
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1307898 C
Classification (IPC)E04C2/00

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMarch 4, 1987Patent grantedSep 29, 1992Term endedSep 29, 2009

Sources & verification

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