Perforation guage for postage stamps
CA 1290935 C · Owner: Hohner, Horst · Inventors: Hohner, Horst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abridqement, A measuring plate (10) supports successive rows of perforation fingers (24i-k) on its upper side the, spacing and diameter of which respectively correspond to the perforations of a postage stamp. By laying the postage stamp on a row of perforation fingers (22i) the conformity of the postage stamp perforations and measuring perforations can be checked in a tactile manner. The measuring plate(10)is connected by way of a hinge (30 to 34) to a trough-like lid member (12) which can be used for checking water-marks. The measuring plate (10) and lid member (12) together form a flat carrying case for postage stamps. (Figure 1).
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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.