US2716459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply for ram jet powered helicopters
Assignee: McDonnell Aircraft Corp
•
Filing: 1950-01-05
•
Granted: 1955-08-30
•
Expires: 1970-01-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Toney
- 👤 Harold H Ostroff
- 👤 Alb C Ballauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2407139A
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US2500618A
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US2581275A
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US2514749A
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US2474685A
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US2485502A
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US2446266A
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GB614676A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |