Apparatus and method of determining the authenticity of weight obtained from a vibrating tray scale
CA 1308748 C · Owner: Sisson, Robert W. · Inventors: Connell, Richard A.; Sisson, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Apparatus and method of determining the authenticity of a signal indicative of the mass of an article being weighted. The article is placed upon the platform and the platform is, caused to oscillate and the period of harmonic motion is measured. One of or both the frequency of oscillation and amplitude of the transducer signal is monitored for purposes of determining authentication.
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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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.
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.