US Plant Patent PP4928
St. Croix
Grapevine
PUBLIC DOMAIN
Patent expired February 11, 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
- PP4928
- Filed
- February 11, 1981
- Granted
- November 9, 1982
- Expires
- February 11, 2001
- Inventor
- SWENSON ELMER
Abstract
A grapevine which exhibits winter hardiness down to -39° F. in northern Wisconsin, with grapes of very low acidity and high sugar content, no labrusca flavor or aroma, and producing a good wine similar to a light to medium burgundy.
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 grapevine, substantially as shown and described herein, characterized particularly as to novelty by the unique combination of winter hardiness down to -39° F. in northern Wisconsin, with grapes of very low acidity, high sugar content, no labrusca flavor or aroma, and producing a good wine similar to a light to medium burgundy.
Read the full patent: US Plant Patent PP4928 in full — the complete specification, every figure, and the file history.