US2885922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical analyzer for fluids
Assignee: Phillips Petroleum Co
•
Filing: 1953-10-01
•
Granted: 1959-05-12
•
Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:13
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US830225A
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US2529030A
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US2462995A
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US2624014A
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US2724304A
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US2686454A
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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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |