Tow frame
CA 1280644 C · Owner: Hartman, Leroy · Inventors: Hartman, Leroy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention, A tow frame for agricultural implements such as seed, drills, is provided. The tow frame includes a primary subframe for attaching to a tow vehicle and to an agricultural implement. A pair of wing subframes are hingedly mounted on opposite sides of the primary subframe. Second and third implements may be coupled to the win subframes. The tow frame is foldable between a field configuration with the implements substantially transversely aligned and a transport configuration with the wing subframes folded rearwardly whereby the second and third implements are each positioned partly behind the first implement.
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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 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.