Patent US2488556A successfully refreshed from Google Patents.
US2488556A
Expired / Lapsed
US
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Apparatus for checking circuit continuity and identifying wires
Assignee: Individual
•
Filing: 1946-01-08
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Granted: 1949-11-22
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Expires: 1966-01-08
Abstract
No abstract record available.
Inventors
- 👤 Charles R Parmenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:44
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US425125A
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US606356A
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US740357A
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US1055018A
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US1089814A
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US1496875A
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US1738710A
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US1977703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |