US2740482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor blade mounted jet engine
Assignee: HILLER HELICOPTERS
•
Filing: 1951-11-20
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Granted: 1956-04-03
•
Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Stanley Hiller
- 👤 Harold H Sigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:24
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/005; F02K7/10; F05; F05D; F05D2260/00; F05D2260/20; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2142601A
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US2385833A
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US2529506A
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US2625795A
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GB614622A
Cited
US2482505A
Cited
US2472917A
Cited
US2625788A
Cited
US2592110A
Cited
US2640321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |