US Plant Patent PP21248

Cornerstone

Prunus rootstock, ‘Cornerstone’

UNDER PATENT

Still under patent. Protection ends April 24, 2029.

No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

Figure 1 of US plant patent PP21248, the photograph of Cornerstone printed in the patent. — Figure 1 from US Plant Patent PP21248, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number: PP21248
Filed: April 24, 2009
Granted: August 31, 2010
Expires: April 24, 2029
Assignee: BURCHELL NURSERY INC
Inventor: SLAUGHTER JOHN K; GERDTS TIMOTHY J

Abstract

A new and distinct variety of rootstock is described and which is characterized as to novelty by its lower incidence and expression of crown gall ( agrobacterium tuberfaciens ).

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new distinct variety of rootstock, substantially as illustrated and described, and which is characterized principally as to novelty by its lower incidence and experience of crown gall ( agrobacterium tuberfaciens ) when compared to other common cultivars.

Read the full patent: US Plant Patent PP21248 in full — the complete specification, every figure, and the file history.