US3497804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single element measuring device and transducer for measuring polyphase power
Assignee: Westinghouse Electric Corp
•
Filing: 1964-08-24
•
Granted: 1970-02-24
•
Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Warren J Schmidt
- 👤 Bernard E Lenehan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:59
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/36; G01R11/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190724074A
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US1156412A
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US1722157A
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US1953519A
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US2240666A
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US2228655A
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US2648821A
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US2997653A
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US2930979A
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US3155903A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |