Patent US2520129A successfully refreshed from Google Patents.
US2520129A
Expired / Lapsed
US
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Lubricating system
Assignee: Individual
•
Filing: 1943-04-28
•
Granted: 1950-08-29
•
Expires: 1963-04-28
Abstract
No abstract record available.
Inventors
- 👤 Albert H Dall
- 👤 Martellotti Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/38; F16N7/40; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303976; Y10T409/30868
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US775923A
Cited
US1669504A
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US1771301A
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US1975951A
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US2021066A
Cited
US2072814A
Cited
US2079700A
Cited
US2140983A
Cited
US2351620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |