Patent US2502933A successfully refreshed from Google Patents.
US2502933A
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US
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Rocker box lubrication system
Assignee: Wright Aeronautical Corp
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Filing: 1944-06-26
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Granted: 1950-04-04
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Expires: 1964-06-26
Abstract
No abstract record available.
Inventors
- 👤 Bois George B Du
- 👤 William G Ovens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:28
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B75/222; F01; F01M; F01M9/00; F01M9/10; F01M9/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1256242A
Cited
FR602018A
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US1889290A
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US2043529A
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US2073009A
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US2123681A
Cited
US2306554A
Cited
US2366701A
Cited
US2381339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |