US Plant Patent PP4169
Pear Tree
PUBLIC DOMAIN
Patent expired December 27, 1994. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on July 19, 1996, but this patent ends 570 days earlier — a terminal disclaimer gives term back. A source that calculates twenty years from filing would tell you this plant is still protected when it is already free.
The record
- Patent number
- PP4169
- Filed
- July 19, 1976
- Granted
- December 27, 1977
- Expires
- December 27, 1994
- Inventor
- CRISAFULLI SR GUISEPP; CRISAFULLI JR EXECUTOR BY JOSE
No cultivar name of record
This patent does not name the plant, and for its era that is ordinary rather than an omission. Before about 1980, breeders frequently patented a plant without giving it a cultivar name at all — the grant identified it by its number, its parentage and a written description of the flower and foliage. Most plant patents from the 1930s to the 1970s have no name in them.
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 semi-dwarf, spreading, slow to medium growing, exceptionally hardy pear tree which is resistant to fireblight and is a regular and light to moderately productive bearer of medium size, good-keeping fruit of good flavor and quality, having yellow skin with a red blush and creamy white flesh, the flesh being of smooth texture with few stone cells, juicy and subacid.
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 pear tree, substantially as illustrated and described, which is medium to slow growing, semi-dwarf, spreading, exceptionally hardy, resistant to fireblight, and a regular and light to moderately productive bearer of medium-size good-keeping fruit, of good flavor and quality, having yellow skin with a red blush and creamy white flesh, the flesh being of smooth texture with few stone cells, juicy and subacid.
Read the full patent: US Plant Patent PP4169 in full — the complete specification, every figure, and the file history.