Patent US2663845A successfully refreshed from Google Patents.
US2663845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp on type electrical measuring instrument
Assignee: Individual
•
Filing: 1950-01-28
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Granted: 1953-12-22
•
Expires: 1970-01-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel J Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:36
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/18; G01R15/186; G01R1/00; G01R1/20; G01R1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2497669A
Cited
US1489665A
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US1924039A
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US2146555A
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US2266624A
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US2326909A
Cited
US2440244A
Cited
US2494206A
Cited
US2515021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |