US3514219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination electrical and pneumatic power supply and method
Assignee: Stewart and Stevenson Services Inc
•
Filing: 1968-08-28
•
Granted: 1970-05-26
•
Expires: 1988-08-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Mitchell
- 👤 Billy J Dodds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:59
CPC Classifications
F; F04; F04C; F04C28/00; F02; F02C; F02C7/00; F02C7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733661A
Cited
US887252A
Cited
US2009001A
Cited
US2130957A
Cited
US3196341A
Cited
US3345517A
Cited
US3465162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |