Surge protector for telecommunications terminals
CA 1292503 C · Owner: Bender, David Kester · Inventors: Lathrop, Richard Reynold Jr.; Bender, David Kester
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A surge protector particularly for protecting, components in a telecommunications system has a thin ceramic, substrate on a surface of which is formed a surge protector resistor having a spiral pattern in the form of a double spiral having two parallel resistor paths in series, the width of the paths and the distance between adjacent path lengths being relatively narrow. Resistance trimming means are provided for increasing the length of a resistor path, there being substantially even distribution of surge effects under surge conditions. - i -
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
- Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.