US2585468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply system for helicopter with jet-driven rotor
Assignee: Individual
•
Filing: 1946-08-03
•
Granted: 1952-02-12
•
Expires: 1966-08-03
Abstract
No abstract record available.
Inventors
- 👤 Isacco Vittorio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
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)
US1230881A
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US1820946A
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US1813852A
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GB366450A
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US1932702A
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US2021470A
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US2074342A
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US2023840A
Cited
FR804408A
Cited
US2330056A
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US2371687A
Cited
US2454040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |