Patent US1967296A successfully refreshed from Google Patents.
US1967296A
Expired / Lapsed
US
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Method of and apparatus for testing electrical devices
Assignee: AT&T Inc
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Filing: 1931-03-12
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Granted: 1934-07-24
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Expires: 1951-03-12
Abstract
No abstract record available.
Inventors
- 👤 Earl M Dixon
- 👤 Konicek Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:15
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-07-23 | 1938-01-22 | 1938-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-23 | 1942-01-22 | 1942-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-23 | 1946-01-22 | 1946-07-24 | $7700.00 | Window Closed / Lapsed |