Patent Yard Sign in
Expired Canadian patentCanada

Assembly to demonstrate and teach the game of bridge

CA 1294432 C · Owner: Weinstein, Leonard · Inventors: Weinstein, Leonard

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The assembly is intended to sequentially reveal four hands of bridge starting from the dealer's hand to and including the right side opponent's hand. As revealed the, hands are represented on an image reproducing surface such as an overhead projector. To arrive at this there is provided a, transparent sheet displaying four pre-determined bridge hands and a series of overlying transparent sheets successively concealing one to four hands of bridge. This assembly visually illustrates in an inter-active learning situation and in an uninterrupted way, the appropriate bidding sequence and the play of each of the four hands of contract bridge that is fifty-two cards.

Read the whole patent

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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 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.
FiledJanuary 26, 1989
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294432 C
Classification (IPC)G09B1/00 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 26, 1989Patent grantedJan 21, 1992Term endedJan 21, 2009

Sources & verification

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