US2988914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously recording viscosimeter
Assignee: Texaco Inc
•
Filing: 1955-05-12
•
Granted: 1961-06-20
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 James M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:19
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; G01N11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2322814A
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US2333884A
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US2459483A
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US2441044A
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GB657696A
Cited
US2631599A
Cited
US2675818A
Cited
US2791902A
Cited
US2837913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |