Patent US2477356A successfully refreshed from Google Patents.
US2477356A
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US
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Turbine oil
Assignee: Sinclair Refining Co
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Filing: 1945-12-03
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Granted: 1949-07-26
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Expires: 1965-12-03
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Wayo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:31
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/04; C10M2219/08; C10M2219/082; C10M2219/085; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371143A
Cited
US2371142A
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US1987526A
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US2073841A
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US2216751A
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US2308503A
Cited
US2371207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |