US2531145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance measurement
Assignee: Toledo Scale Corp
•
Filing: 1947-03-21
•
Granted: 1950-11-21
•
Expires: 1967-03-21
Abstract
No abstract record available.
Inventors
- 👤 Salvatore M Marco
- 👤 Wells L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:36
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/105; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665397A
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US2037799A
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US2401424A
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US2395881A
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US2379462A
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US2350545A
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US2466746A
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US2467856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |