Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5142798 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Claude J. Gidman | 1992-09-01 |
| 5068984 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Claude J. Gidman | 1991-12-03 |
| 4959912 | Downhill ski boot assembly | William H. Kaufman, Frederick A. Harrison, Claude J. Gidman | 1990-10-02 |
| 4865311 | Playground slide construction | — | 1989-09-12 |
| 4855555 | Microwave apparatus for thawing frozen liquid and a bag holder assembly for use therein | Glenn N. Adams | 1989-08-08 |
| D271785 | Playground equipment ladder | Donald G. Curtis | 1983-12-13 |
| D271786 | Playground equipment step | Donald G. Curtis | 1983-12-13 |
| 4314782 | Tool guide | — | 1982-02-09 |
| 4212542 | Front end loading transit mixer | — | 1980-07-15 |
| D254221 | Carrying container | — | 1980-02-19 |
| D254201 | Skate | Ian F. Norton | 1980-02-12 |