US Plant Patent PP6192
Birch tree
PUBLIC DOMAIN
Patent expired May 31, 2005. 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
- PP6192
- Filed
- January 8, 1985
- Granted
- May 31, 1988
- Expires
- May 31, 2005
- Assignee
- FRANK SCHMIDT & SON CO J
- Inventor
- SABELL WALLACE H
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 novel birch tree is described, characterized by white bark, a pyramidal shaped crown, strong upwardly arching branches angled at approximately 45° from the trunk, resistance to Winter die-back in Rocky Mountain climates, and large foliage.
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 birch tree, substantially as herein shown and described, characterized particularly as to novelty by white bark, a pyramidal shaped crown, strong arching upright branches, resistance to Winter die-back and large foliage.
Read the full patent: US Plant Patent PP6192 in full — the complete specification, every figure, and the file history.