US Plant Patent PP4059
Colt
Cherry rootstock--Colt variety
PUBLIC DOMAIN
Patent expired June 14, 1994. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on April 19, 1996, but this patent ends 675 days earlier — a terminal disclaimer gives term back. A source that calculates twenty years from filing would tell you this plant is still protected when it is already free.
The record
- Patent number
- PP4059
- Filed
- April 19, 1976
- Granted
- June 14, 1977
- Expires
- June 14, 1994
- Assignee
- NAT SEED DEV ORG LTD
- Inventor
- TYDEMAN HENRY M; TYDEMAN EXECUTRIX BY ELIZABETH; TYDEMAN EXECUTOR BY WILLIAM MA
Abstract
This invention relates to a new and distinct variety of cherry tree useful as a dwarfing cherry rootstock. The new variety originated as a seedling by crossing pollen from Prunus pseudocerasus Lind. onto flowers of Prunus avium L. F 299/2. Cherry trees on the understock of this variety are approximately 50 percent of the size of like cherry trees on F 12/1 understock. Also, this variety induces higher fruit bud production on the scion on this rootstock in the early life of the grafted cherry tree than if grafted on F 12/1 understock, thus giving heavier cherry crops earlier in the life of the grafted tree.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of cherry tree useful as a dwarfing cherry rootstock substantially as illustrated and described, produced as a seedling by crossing pollen from Prunus pseudocerasus Lind. onto flowers of Prunus avium L. F 299/2, which when used as an understock induces less growth of the cherry tree, and higher fruit bud production on the scion in the early life of the grafted cherry tree.
Read the full patent: US Plant Patent PP4059 in full — the complete specification, every figure, and the file history.