US Plant Patent PP5339
Australian tree fern
Dwarf Australian tree fern
PUBLIC DOMAIN
Patent expired September 29, 2002. 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
- PP5339
- Filed
- September 29, 1982
- Granted
- November 13, 1984
- Expires
- September 29, 2002
- Assignee
- WEYERHAEUSER CO
- Inventor
- POWELL DAVID A; JURADO SALVADOR T
Abstract
A mutation of the Australian Tree Fern, characterized by its slower growth, a more compact habit, and reduced height and width at maturity.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed is: 1. A new and distinct plant variety of Sphaeropteris cooperi as shown and described, which is principally characterized by its compact and symmetrical growth, its greater foliage density, a higher number of fronds in the crown, and by a mature height and diameter substantially smaller than the standard variety.
Read the full patent: US Plant Patent PP5339 in full — the complete specification, every figure, and the file history.