US2605304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor load indicator
Assignee: Pure Oil Co
•
Filing: 1947-10-18
•
Granted: 1952-07-29
•
Expires: 1967-10-18
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Proctor
- 👤 Lynn E Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:07
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/34; G01R31/343; B; B23; B23Q; B23Q15/00; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1449458A
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US1629858A
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US1602882A
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US1810405A
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US2054787A
Cited
US2067996A
Cited
US2266733A
Cited
GB558614A
Cited
US2426204A
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US2434547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |