Spencer; Douglas S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Spencer; Douglas S..The latest application filed is for "abrasive articles and methods of making same".
- Spencer; Douglas S. - St. Paul MN
- Spencer; Douglas S. - Ramsey MN
| Patent | Date |
|---|---|
| Abrasive articles and methods of making same Grant 5,551,961 - Engen , et al. September 3, 1 | 1996-09-03 |
| Method of making a coated abrasive article Grant 5,368,618 - Masmar , et al. * November 29, 1 | 1994-11-29 |
| Coated abrasive suitable for use as a lapping material Grant 4,773,920 - Chasman , et al. September 27, 1 | 1988-09-27 |
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