Patent US2454201A successfully refreshed from Google Patents.
US2454201A
Expired / Lapsed
US
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Electrical measuring instrument
Assignee: Westinghouse Electric Corp
•
Filing: 1943-11-13
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Granted: 1948-11-16
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Expires: 1963-11-13
Abstract
No abstract record available.
Inventors
- 👤 Ambrose J Petzinger
- 👤 Rodney V Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:58
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/02; G01R11/17; G01R11/18; G01R11/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US606033A
Cited
US1156412A
Cited
US1624178A
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US1677203A
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US2228655A
Cited
US2323732A
Cited
US2323738A
Cited
US2333509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |