Elevator communication controller
CA 1266729 C · Owner: Inventio Ag · Inventors: Anderson, Arthur Alan; Pillage, Lawrence Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
31 53,109, ABSTRACT OF THE DISCLOSURE, An addressable elevator communication controller which, when addressed by a valid input message prepares a, return message and has its return data interface enabled for one message. The return message is automatically clocked out of the communication controller via the enabled return data interface as the next input message is clocked into the controller, regardless of whether the incoming message is addressed to this communication controller or to another communication controller. The communication controller is operable in one of two completely different modes, simply by controlling the logic level of one input pin. Input messages, as well as message …
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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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
- 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.