US Plant Patent PP4957
Avocado tree
PUBLIC DOMAIN
Patent expired February 10, 2001. 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
- PP4957
- Filed
- February 10, 1981
- Granted
- November 23, 1982
- Expires
- February 10, 2001
- Inventor
- BOWKER JOHN K
No cultivar name of record
This patent does not name the plant. Through the 1980s and early 1990s that was still common: naming every new cultivar only became standard practice as plants began to be marketed under brand names. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
An avocado tree having limited height and limited spread, and an extended harvest period wherein the fruits may be left on the tree to increase in size and oil content.
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 avocado tree as described and illustrated, characterized particularly by its prolonged harvest period, the thick skin of the fruit, and limited height and limited spread of tree.
Read the full patent: US Plant Patent PP4957 in full — the complete specification, every figure, and the file history.