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Patent US2477098A successfully refreshed from Google Patents.
US2477098A
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US
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Internal-combustion engine operation
Assignee: Standard Oil Co
•
Filing: 1943-05-24
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Granted: 1949-07-26
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Expires: 1963-05-24
Abstract
No abstract record available.
Inventors
- 👤 Harry N Taylor
- 👤 Edwin A Droegemueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:59
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1881; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1980097A
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US2364921A
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US2407263A
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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 |