Method and microfilm camera for detecting codes applied to original copies in the camera
CA 1291892 C · Owner: Zieran, Eberhard · Inventors: Weinzierl, Manfred; Zieran, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a microfilm camera for detecting codes applied to original copies being screened in the camera in which a code reader detects the codes, and a counter and comparison device is provided, which is connected to the code reader and is adjusted to a predetermined number of the copies. Two intermediate memories are connected to the counter and comparison device. The memories count and store marks for the blip types and codes from the code reader, respectively. The code value the blip mark value and the copy number value are compared in the counter and comparison device and when coincide a copy, supply which was previously stopped is switched on again.
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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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 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.