Stafford; Frank K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stafford; Frank K..The latest application filed is for "movable roof support and bolter system".
- Stafford; Frank K. - Beckley WV
| Patent | Date |
|---|---|
| Movable roof support and bolter system Grant 4,710,064 - Stafford , et al. December 1, 1 | 1987-12-01 |
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