Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5215072 | Cutting element and saw chain for cutting aggregate material | — | 1993-06-01 |
| 5119798 | Abrasive cutting apparatus including inverted cutting chain with inward facing cutting elements | — | 1992-06-09 |
| 4971022 | Cutting chain for aggregate materials | John Edgerton, Johann Weber | 1990-11-20 |
| 4920947 | Chain saw components and system for cutting masonry and the like | Francis E. Hoffman, Kenneth R. Bolkan | 1990-05-01 |
| 4827821 | Cutting chain | Johann Weber | 1989-05-09 |
| 4581968 | Saw chain with improved cutting depth control | Duane M. Gibson, Kent L. Huntington, William G. Killen | 1986-04-15 |
| 4535667 | Saw chain | Duane M. Gibson | 1985-08-20 |
| 4530258 | Saw chain sharpening method and apparatus | Duane M. Gibson | 1985-07-23 |
| 4515055 | Circular saw blade | — | 1985-05-07 |
| 4501184 | Cutting tool with improved depth control | Duane M. Gibson | 1985-02-26 |
| 4497232 | Cutting tool with cutting tooth insert | Duane M. Gibson, Arthur J. Woodfill | 1985-02-05 |
| 4432264 | Circular saw blade | — | 1984-02-21 |
| 4316327 | Chain saw | Duane M. Gibson | 1982-02-23 |
| 4272889 | Portable saw | Duane M. Gibson | 1981-06-16 |
| 4194544 | Splitting device | Duane M. Gibson | 1980-03-25 |