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Patent US2677440A successfully refreshed from Google Patents.
US2677440A
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US
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Lubricating system
Assignee: Mack Manufacturing Corp
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Filing: 1950-09-13
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Granted: 1954-05-04
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Expires: 1970-09-13
Abstract
No abstract record available.
Inventors
- 👤 Willis Delbert Elwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:42
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/045; F16N; F16N39/00; F16N39/06; F16H57/0402; F16H57/0404; F16H57/048; F16H57/0493; F16H57/0494
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |