US2494606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump for propeller pitch changing mechanisms
Assignee: RTX Corp
•
Filing: 1944-09-21
•
Granted: 1950-01-17
•
Expires: 1964-09-21
Abstract
No abstract record available.
Inventors
- 👤 John E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:24
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0443; B; B64; B64C; B64C11/00; B64C11/30; F04B1/0426; F04B1/053; F04B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE635992C
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US2023795A
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GB480747A
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US2229058A
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US2296288A
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US2307102A
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US2347104A
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US2403532A
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US2462931A
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US2462932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |