Patent US2445667A successfully refreshed from Google Patents.
US2445667A
Expired / Lapsed
US
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Electrical circuit tester
Assignee: Winona Tool Manufacturing Co
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Filing: 1943-10-22
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Granted: 1948-07-20
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Expires: 1963-10-22
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Fuglie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:29
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/005; G01R31/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US418855A
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US552166A
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US953678A
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US1454623A
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US1395819A
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US1684798A
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US1707051A
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US1771219A
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US1888906A
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US2237187A
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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) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |