Heating system for propagating plants
CA 2067534 A1 · Owner: Wascana Mechanical 1986 Limited · Inventors: Warnecke, Lawrence R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A propagation system for plants includes a table onto which trays of the just germinated plants are placed for heating of the growing medium in which the seedling is located. The heating surface of the table has an even heat applied across the full surface by the use of a sheet formed as an extrusion having a plurality of tubes therethrough defined by the upper wall, the lower wall and a plurality of longitudinally extending divider walls. A header is attached to each end of the sheet and includes a tube having a slot which is clamped onto the upper and lower surfaces of the sheet with end closure members acting to seal the end of the tube. A heating circuit is provided for heating the …
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 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 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.