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Expired Canadian patentCanada

Integrated stereo and bathtub system

CA 1235857 A · Owner: Diamond, Harvey E. · Inventors: Diamond, Harvey E.

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 bathtub, and in particular a whirpool bathtub or spa, is, provided with an upwardly extending surrounding wall portion or surrounding collar at the sitting end of the tub. The collar is preferably formed of plastic as an integral unit with the plastic bathtub wall, and has a plurality of apertures formed therein for the mounting of speakers therein. The speakers once mounted, within the apertures, surround the sitting area of the bathtub. The speaker apertures are placed above the overflow of the bathtub.

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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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 16, 1985
GrantedMay 3, 1988
Term endedMay 3, 2005
Patent numberCA 1235857 A
Classification (IPC)A47K4/00

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJan 16, 1985Patent grantedMay 3, 1988Term endedMay 3, 2005

Sources & verification

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