US2612955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air screw, including a resonant pulse jet system
Assignee: TENNEY
•
Filing: 1947-03-05
•
Granted: 1952-10-07
•
Expires: 1967-03-05
Abstract
No abstract record available.
Inventors
- 👤 William L Tenney
- 👤 Charles B Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:55
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/005; B; B64; B64C; B64C11/00; F02K7/02; F02K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR408033A
Cited
US1099083A
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US1133660A
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US1519444A
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GB227151A
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FR648107A
Cited
GB366450A
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US1983405A
Cited
GB386908A
Cited
US2371687A
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US2397357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |