Droffner; Mary D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Droffner; Mary D..The latest application filed is for "test kits for determining the chemical stability of a compost sample".
- Droffner; Mary D. - Mount Vernon ME
| Patent | Date |
|---|---|
| Test kits for determining the chemical stability of a compost sample Grant 5,320,807 - Brinton , et al. June 14, 1 | 1994-06-14 |
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