US Plant Patent PP4074
piggy-back
Variegated piggy-back plant
PUBLIC DOMAIN
Patent expired July 12, 1994. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on August 5, 1996, but this patent ends 755 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
- PP4074
- Filed
- August 5, 1976
- Granted
- July 12, 1977
- Expires
- July 12, 1994
- Inventor
- NOWAKOWSKI RICHARD JOSEPH
Abstract
A new variety of the foliage plant Tolmiea menziesii, commonly known as the piggy-back plant, is characterized by variegated leaves.
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 piggy-back plant (Tolmiea menziesii variety variegata) substantially as herein shown and described, characterized particularly as to the novel variegated foliage, a new and vigorous decorative type plant.
Read the full patent: US Plant Patent PP4074 in full — the complete specification, every figure, and the file history.