US Plant Patent PP6511
Sterling
Sterling silver linden
PUBLIC DOMAIN
Patent expired December 24, 2006. 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
- PP6511
- Filed
- December 24, 1986
- Granted
- January 3, 1989
- Expires
- December 24, 2006
Abstract
A silver linden tree having a compact form, relatively smooth bark, few flowers and fruits, and healthy 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 distinctive variety of Tilia tomentosa, named `Sterling` is described herein that differs from other varieties by the unique combination of: (1) moderately-pyramidal, very symmetrical, tight, dense crown instead of the variable, pendulous, hemispherical or broadly-domed crown of the species; (2) the consistently tight ascending multiple branching in the upper one-half of the trunk; (3) the leaves that are completely silvery-tomentose when young, becoming dark green and lustrous above at maturity; (4) the smooth beech-like bark; (5) the sparse production of flowers and fruit; and (6) the overall neatness of the tree with healthy foliage throughout the growing season and general lack of messy fruit.
Read the full patent: US Plant Patent PP6511 in full — the complete specification, every figure, and the file history.