US2462931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump for hydraulic pitch changing mechanisms
Assignee: RTX Corp
•
Filing: 1943-04-08
•
Granted: 1949-03-01
•
Expires: 1963-04-08
Abstract
No abstract record available.
Inventors
- 👤 John E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
F; F04; F04B; F04B5/00; F04B1/00; F04B1/04; F04B1/0404; F04B1/0426; F04B1/053; F04B1/10; F04B1/113; F04B1/1133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR366337A
Cited
US955464A
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US982632A
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US1023685A
Cited
US1874010A
Cited
US2023785A
Cited
US2279645A
Cited
US2307102A
Cited
US2317636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |