Drift tube and method of manufacture
CA 2094970 A1 · Owner: Loen, Andrew E. · Inventors: Loen, Andrew E.; Bales, Frank E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gate for an insulating cylindrical drift tube is comprised of a plurality of spaced parallel wires cemented to an edge of one end of the tube the, wires each having similar tension between the edge even numbered wires being electrically connected together, and odd numbered wires separately being electrically connected together, whereby two mutually insulating interdigitated grids of wires having similar tension are formed.
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 April 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2015.
- 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.