Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| PP10151 | Pyrus calleryana.times.betulifolia tree named `Edgewood` | — | 1997-12-16 |
| PP9103 | Oak tree `Crimschmidt` | — | 1995-04-11 |
| PP8951 | Syringa pekinensis | — | 1994-10-18 |
| PP7655 | Acer.times.freemani named `DTR 102` | — | 1991-09-24 |
| PP7120 | Fraxinus pennsylvanica Lednaw | — | 1990-01-23 |
| PP7036 | Green ash named `Wasky` | — | 1989-09-19 |
| PP7033 | Pyrus betulaefolia `Southworth` | — | 1989-09-19 |
| PP6993 | Red maple named Wandell | — | 1989-08-22 |
| PP6746 | English oak named `Wandell` | — | 1989-04-18 |
| PP6745 | Littleleaf linden named `Norbert` | — | 1989-04-18 |
| PP6709 | Thornless Honeylocust | — | 1989-04-04 |
| PP6511 | Sterling silver linden | — | 1989-01-03 |
| PP6215 | Green ash named Urbanite | — | 1988-07-05 |
| PP5717 | Amelanchier Autumn brilliance | — | 1986-04-15 |
| PP5221 | Ginkgo tree named Shangri-la | — | 1984-04-17 |
| PP5079 | Sugar maple tree named Commemoration | — | 1983-08-02 |
| PP4989 | Sugar hackberry tree named All Seasons | — | 1983-03-08 |
| PP4979 | Sugar maple tree named Legacy | — | 1983-02-01 |