Patent US2889736A successfully refreshed from Google Patents.
US2889736A
Expired / Lapsed
US
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Oil testing apparatus
Assignee: Individual
•
Filing: 1954-08-17
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Granted: 1959-06-09
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Expires: 1974-08-17
Abstract
No abstract record available.
Inventors
- 👤 Edward M Borg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:34
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1864092A
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US1940772A
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US1938544A
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US2082252A
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US2059374A
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US2062588A
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US2062587A
Cited
GB500892A
Cited
US2510347A
Cited
US2690695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |