US Plant Patent PP4216
Maryland
African violet plant
PUBLIC DOMAIN
Patent expired February 21, 1995. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on November 30, 1996, but this patent ends 648 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
- PP4216
- Filed
- November 30, 1976
- Granted
- February 21, 1978
- Expires
- February 21, 1995
- Inventor
- HOLTKAMP REINHOLD
Abstract
A distinct African Violet plant having strong and erect flower stems, flowers which are medium blue in flower color and relatively large and star-shaped in form, uniform flowering, and generally round, medium green 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 distinct cultivar of African violet known by the cultivar name Maryland and characterized particularly as to uniqueness by the combined characteristics of large star-shaped flowers which are medium blue in flower color and non-dropping; generally round, medium green foliage; erect, upright and strong flower stems; compact growth habit; continuous flowering and very uniform first flowering, approximately 6-7 weeks after potting.
Read the full patent: US Plant Patent PP4216 in full — the complete specification, every figure, and the file history.