Method and an arrangement in a teleprinter equipment
CA 1101517 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Strid, Alexander; Hultman, Hans E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a teleprinter equipment a method and arrangement, to transmit messages between a station and a teleprinter apparatus by feeding D.C.-pulses, representing binary coded characters in the message, through a line interconnecting the station and the teleprinter apparatus. The line has a capacitance dependent upon the length of the line. The method is characterized in that the current is regulated, at least in an interval following the closing of the line path at the beginning of a current pulse, by means of a variable impedance element included in series with the line path on the transmitter side. The variable impedance element is controlled such that the impedance value of the impedance …
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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 May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
- 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
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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.