US Plant Patent PP5537
Revival
Hybrid chestnut tree `Revival`
PUBLIC DOMAIN
Patent expired November 4, 2003. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.
The record
- Patent number
- PP5537
- Filed
- November 4, 1983
- Granted
- August 20, 1985
- Expires
- November 4, 2003
- Inventor
- WALLACE ROBERT D
Abstract
A medium size, vigorous chestnut tree, having a single, upright straight bole and dense foliage with heavily scented flowers appearing after leaf out in spring; the tree being a regular (yearly) and prolific bearer of very large and very sweet nuts, the burrs cracking in mid-September; the tree also showing all evidence of having a very high inherent resistance to the chestnut bark blight (Endothia parasitica), coming from a line of hybrid chestnut trees that have not shown a single instance of infection in over 30 years of breeding efforts and passing inoculation tests without succumbing to infection, and the present variety itself not showing any instance of blight intrusion in 7 years of growth in the orchard.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct variety of Chestnut tree, substantially as illustrated and described, which is of medium size, vigorous, upright, with abundant foliage and large, glossy, elliptical leaves with dentate margins and late (post leaf appearance) flowering; the tree being a regular and heavy bearer of large and very sweet nuts in burrs that crack in mid-September and release the crop easily; the trees being especially characterized by a very high inherent resistance to the chestnut bark blight.
Read the full patent: US Plant Patent PP5537 in full — the complete specification, every figure, and the file history.