US Plant Patent PP7311
Asparagus plant
PUBLIC DOMAIN
Patent expired August 11, 2009. 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
- PP7311
- Filed
- August 11, 1989
- Granted
- August 28, 1990
- Expires
- August 11, 2009
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
A cloned variety of female Asparagus plant embodying great uniformity of all characteristics which include vigor, rust tolerance, yielding of a high proportion of large "jumbo" spears, maintaining good plant stand, resistance to crown rot under adverse low, wet field conditions and superior volume of quality spears.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct cloned variety of female Asparagus plant substantially as shown and described, characterized particularly as to novelty by the outstanding vigor and rust tolerance, yield of high proportion of large "jumbo" spears, which weight nearly twice as much as medium spears of varieties which produce only 30-40% jumbo spears, ability to maintain good plant stand and vigor under conditions which usually result in serious crown rot, and consistantly maintaining these desirable characteristics over large quantities of Asparagus plants.
Read the full patent: US Plant Patent PP7311 in full — the complete specification, every figure, and the file history.