US3013398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity control system and apparatus
Assignee: General Equipment and Manufacturing Co Inc
•
Filing: 1957-10-31
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Granted: 1961-12-19
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Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 Frank P Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/14; A; A23; A23G; A23G9/00; A23G9/04; A23G9/20; A23G9/22; A23G9/228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2706385A
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US2836038A
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US2873584A
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US2808706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |