Retainer for documents
CA 1293786 C · Owner: Weiss, Andrew Ernest · Inventors: Weiss, Andrew Ernest
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A document retainer having receptacles is provided and is equipped with clip switch contact sensors positioned in the retainer receptacles. Documents held in the receptacles maintain opposed faces of the clip switch contact sensors in a spaced relationship by being interposed therebetween. When a document is withdrawn the contact, faces spring into engagement to form a closed circuit thereby energizing an alarm circuit that has audible and inaudible alarms to facilitate indication of the document withdrawal. A resetable timing device is provided to suppress the audible alarm for a period considered sufficient for a card transaction to take place. Preferably the retainer is in the form, of a …
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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 December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 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.