Teaching and amusement apparatus
CA 1287171 C · Owner: Price/Stern/Sloan, Inc. · Inventors: Frazer, Stephen Oliver; Riddiford, Martin Philip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A T I O N TO ALL WHOM IT MAY CONCERN:, Be it known that we PRICE/STERN/SLOAN , INC. a, corporation organised under the laws of the State of Delaware, United States of America, of 360 North La Cienega Boulevard, Los Angeles, California United States, of America, are in possession of an invention entitled: TEACHING AND AMUSEMENT APPARATUS, and the following disclosure contains a full description of the invention and of the best mode known to the inventors for taking advantage of the same. ABSTRACT Teaching and Amusement Apparatus, Known teaching and amusement apparatus comprises a self-contained electronic "pen" which is used in conjunction with specially printed material to provide an …
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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.