Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280264 | Method for fabricating large diameter gears, gear-blanks and the like | by Helen Negrich, executrix | 1981-07-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280264 | Method for fabricating large diameter gears, gear-blanks and the like | by Helen Negrich, executrix | 1981-07-28 |