Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5423240 | Side-crowned carbide cutting blades and cutting devices | — | 1995-06-13 |
| 4725171 | Drill for aramid composites | — | 1988-02-16 |
| 4487350 | Method and apparatus for cutting pattern shaped holes in glass sheets | — | 1984-12-11 |
| 4466562 | Method of and apparatus for severing a glass sheet | — | 1984-08-21 |
| 4341139 | Apparatus for scoring a coated substrate | — | 1982-07-27 |
| 4300934 | Method of and apparatus for scoring a coated substrate | — | 1981-11-17 |
| 4291824 | Self-aligning method for scoring fracturable material | — | 1981-09-29 |
| 4263754 | Shaping an arcuate surface on a wheel blank | — | 1981-04-28 |
| 4225070 | Method of simultaneously opening two scores transverse to one another | John R. Dahlberg | 1980-09-30 |