US Plant Patent PP6627
Barr
Avocado tree called Barr Duke
PUBLIC DOMAIN
Patent expired September 21, 2007. 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
- PP6627
- Filed
- September 21, 1987
- Granted
- February 21, 1989
- Expires
- September 21, 2007
Abstract
A new and distinct rootstock variety of avocado tree characterized by its high yield resistance to Phytophthora root rot caused by Phytophthora cinnamomi. This variety has a high level of resistance comparable to the 'Duke 7' rootstock variety. It is also characterized under some field conditions by producing a somewhat smaller tree, when grafted with a 'Haas' scion, than that typical of a 'Duke 7' rootstock.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. The new and distinct rootstock variety of avocado tree herein described and illustrated and identified by the characteristics enumerated above.
Read the full patent: US Plant Patent PP6627 in full — the complete specification, every figure, and the file history.