US2980078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing pneumatic motor
Assignee: MASTER POWER CORP
•
Filing: 1957-04-01
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Granted: 1961-04-18
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Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest R Conover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863; F01C20/00; F01C20/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2103180A
Cited
US2257892A
Cited
GB528034A
Cited
US2660123A
Cited
US2715889A
Cited
US2777396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |