Patent US2628994A successfully refreshed from Google Patents.
US2628994A
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US
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Switching arrangement for electrical measuring systems
Assignee: Schneider Electric Systems USA Inc
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Filing: 1947-10-31
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Granted: 1953-02-17
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Expires: 1967-10-31
Abstract
No abstract record available.
Inventors
- 👤 Goodman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2218477A
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US2220602A
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US2141056A
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US2284476A
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US2306479A
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US2367746A
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US2376527A
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US2427191A
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US2512702A
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US2456420A
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |