US2630968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical calculator for solving phase equilibrium problems
Assignee: Gulf Research and Development Co
•
Filing: 1948-11-01
•
Granted: 1953-03-10
•
Expires: 1968-11-01
Abstract
No abstract record available.
Inventors
- 👤 Muskat Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:47
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/75
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893009A
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US2545655A
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US2476747A
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US2416363A
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US2403989A
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US2500997A
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US2417098A
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US2503387A
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US2503932A
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |