Sprague; Stephen B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sprague; Stephen B..The latest application filed is for "hand carryable travel container convertable to rollable cart".
- Sprague; Stephen B. - Campbell CA
- Sprague; Stephen B. - Torrance CA
| Patent | Date |
|---|---|
| Hand carryable travel container convertable to rollable cart Grant 4,087,102 - Sprague May 2, 1 | 1978-05-02 |
| Telescoping Power Support Grant 3,859,481 - Sprague January 7, 1 | 1975-01-07 |
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