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US2871450A
Expired / Lapsed
US
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Electrical measuring instruments
Assignee: International Instruments inc
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Filing: 1956-10-09
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Granted: 1959-01-27
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Expires: 1976-10-09
Abstract
No abstract record available.
Inventors
- 👤 Richard H Podoloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:30
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US529435A
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US2596297A
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US2626296A
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GB190609351A
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US1227468A
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US2464190A
Cited
US2560879A
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US2576583A
Cited
US2619933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |