Field trap for flies
CA 2129678 C · Owner: Knights, Christopher Robin · Inventors: Braven, James; Hawkes, Colin; Groom, Murree Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A species-selective field trap for flies which comprises a receptacle (I) having a removable lid (4), said receptacle forming a substantially closed chamber(s), when the lid is in place within which a, source of chemical attractant vapour attractive to the selected species of fly and unattractive to most other species of fly is positioned in use the receptacle having a substantially opaque upper in use, end (2, 4), which is coloured as a visual attractant to the selected species of fly and raving one or more small apertures (6) in a/the side or the lid in, use, thereof adapted to closely accommodate passage of the selected species of fly therethrough, said apertures being the primary and …
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 December 7, 1992 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 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.