Calkins; Thornton Ross
Patent Applications and Registrations
Patent applications and USPTO patent grants for Calkins; Thornton Ross.The latest application filed is for "stabilized polycarbonate resin".
- Calkins; Thornton Ross - Pittsfield MA
| Patent | Date |
|---|---|
| Stabilized polycarbonate resin Grant 4,092,288 - Calkins , et al. May 30, 1 | 1978-05-30 |
| Heat stabilized polycarbonate resin Grant 4,076,686 - Calkins February 28, 1 | 1978-02-28 |
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