Method and apparatus for interfacing with computer
CA 2072220 A1 · Owner: Field, Robert D. · Inventors: Field, Robert D.; Strosberg, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method of interfacing peripherals to a host computer having one or more asynchronous ports uses a circuit board having a microprocessor. The device is connected into a bus of the computer so that it emulates the asynchronous port. One or more peripherals are connected to the device and the microprocessor on the device transmits data using ASCII commands between the computer and the peripheral to control the peripheral. There is no need to change the computer bios or to extend the software of the computer. With previous devices to interface peripherals, either the devices are installed between the keyboard and the computer and do not work satisfactorily or they require …
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 June 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2014.
- 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.