US2950592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant pulse jet engine having an engine valve antechamber
Assignee: Curtis Automotive Devices Inc
•
Filing: 1954-01-06
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Granted: 1960-08-30
•
Expires: 1974-01-06
Abstract
No abstract record available.
Inventors
- 👤 Paul A Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:10
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1369672A
Cited
US2010020A
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FR814347A
Cited
FR900960A
Cited
AT169483B
Cited
US2717637A
Cited
US2612722A
Cited
US2787885A
Cited
US2748753A
Cited
US2719580A
Cited
US2701950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |