US2691300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque computer
Assignee: Phillips Petroleum Co
•
Filing: 1951-12-17
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Granted: 1954-10-12
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Expires: 1971-12-17
Abstract
No abstract record available.
Inventors
- 👤 William L Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:20
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; G; G01; G01L; G01L3/00; G01L3/02; G01L3/04; G01L3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2362616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |