US2515475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power booster for aircraft surface control
Assignee: RTX Corp
•
Filing: 1944-09-19
•
Granted: 1950-07-18
•
Expires: 1964-09-19
Abstract
No abstract record available.
Inventors
- 👤 James M Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/12; B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US949559A
Cited
FR513267A
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GB130213A
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US1365347A
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FR668388A
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US1854226A
Cited
US2165451A
Cited
US2360542A
Cited
US2389274A
Cited
US2337706A
Cited
US2352334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |