Patent US2122370A successfully refreshed from Google Patents.
US2122370A
Expired / Lapsed
US
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Slide wire resistance
Assignee: Brown Instruments Co
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Filing: 1934-04-26
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Granted: 1938-06-28
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Expires: 1954-04-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Harrison
- 👤 Ernest H Grauel
- 👤 Kessler John Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:53
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; G01R13/00; G01R13/04; G01R13/08; G01R17/00; G01R17/02; H; H01; H01C; H01C10/00; H01C10/24
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) | 1941-06-27 | 1941-12-27 | 1942-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-06-27 | 1945-12-27 | 1946-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-06-27 | 1949-12-27 | 1950-06-28 | $7700.00 | Window Closed / Lapsed |