Patent US2647323A successfully refreshed from Google Patents.
US2647323A
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Assignee: Sunoco Inc
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Filing: 1947-09-26
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Granted: 1953-08-04
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Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Johnson Ford Lawrence
- 👤 Fred M Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
G; G01; G01C; G01C7/00; G01C7/02; G01C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US47906A
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US481432A
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US536906A
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US844932A
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US1621856A
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US2082539A
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US2320290A
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US2371040A
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US2478911A
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US2445517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |