Chart recorder
CA 2103602 C · Owner: Schmidt, Dieter · Inventors: Schmidt, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This chart recorder with n or m (n, m = 1 2, 3, ...) measuring, channels, one for each of n or m measurement signals to be recorded, has a printing device (5) or m continuous-line recording devices (31, 32.) which produces/produce n equal colored dot sequences (8), each associated with one of the n measurement signals, or continuous lines (8' 8") each, associated with one of tree m measurement signals as measurement, curves on a recording medium (4 4') moving past it/them. Those, portions (81 81', 81") of the dot sequences or continuous lines which are currently being formed lie behind a covering portion (51, 51') formed by the printing device (5) or the continuous-line recording devices …
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
- Filed August 9, 1993 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2015.
- 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.