Location identification
CA 2008573 C · Owner: Gordon, Alastair T. · Inventors: Reichmann, Michael H.; Gordon, Alastair T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved data transmission system which transmits data at least partially over existing telephone lines, the improvement comprising devices which in addition, to transmitting and receiving data and being actuated by a non-telephone signal, automatically complete a telephone communication with a predetermined computer. Once the device is connected to the computer, it receives information such as a particular telephone number which is used in the reception and/or transmission of data. The received information is preferably peculiar to the location of the device and can be used to appropriately program the device for carrying out a function in a manner specific to its location. The …
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 January 25, 1990 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2012.
- 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.