US2432664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control automatically variable with altitude
Assignee: RTX Corp
•
Filing: 1943-06-26
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Granted: 1947-12-16
•
Expires: 1963-06-26
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:20
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0246; F02D2700/0248; F02D2700/0251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB450587A
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US2233319A
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GB499395A
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US2223381A
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US2233307A
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US2205354A
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US2305070A
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GB537028A
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US2243627A
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US2283175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |