US2997013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion system
Assignee: Individual
•
Filing: 1958-07-18
•
Granted: 1961-08-22
•
Expires: 1978-07-18
Abstract
No abstract record available.
Inventors
- 👤 Warren A Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:02
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/04; B; B63; B63H; B63H11/00; B63H11/02; B63H11/025; H01; H01J; H01J17/00; H01J17/02; H01J17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US622474A
Cited
US868199A
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US2686474A
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US2763125A
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US2865291A
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US2766582A
Cited
US2808002A
Cited
US2756678A
Cited
US2787219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |