Stafford III; Fred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stafford III; Fred.The latest application filed is for "permanent mine bulkhead seal and method for constructing same".
- Stafford III; Fred - Newell WV
| Patent | Date |
|---|---|
| Permanent mine bulkhead seal and method for constructing same Grant 5,725,327 - Hussey , et al. March 10, 1 | 1998-03-10 |
| Permanent ventilation seal Grant 5,385,504 - Hussey , et al. January 31, 1 | 1995-01-31 |
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