US3056393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety shutdown apparatus
Assignee: Stewart and Stevenson Services Inc
•
Filing: 1961-12-05
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Granted: 1962-10-02
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Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 James F Friddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:58
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/14; F01P11/16; F01M; F01M1/00; F01M1/18; F01M1/20; F01M1/22; F01M1/28; F02; F02B; F02B77/00; F02B77/08; F02D; F02D17/00; F02D17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |