US2633016A
Expired / Lapsed
US
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Apparatus for measuring viscosity
Assignee: Sunoco Inc
•
Filing: 1947-08-29
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Granted: 1953-03-31
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Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
- 👤 John W Millington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:45
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1832901A
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US2142854A
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US2425868A
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US2315127A
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US2396420A
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US2412575A
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US2340507A
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US2340992A
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US2422806A
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |