Patent US2524478A successfully refreshed from Google Patents.
US2630007A
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Electrical measuring apparatus, including a condition responsive impedance
Assignee: Schneider Electric Systems USA Inc
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Filing: 1943-07-28
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Granted: 1953-03-03
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Expires: 1963-07-28
Abstract
No abstract record available.
Inventors
- 👤 Wilfred H Howe
- 👤 Robert W Cushman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:07
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/16; G01D; G01D5/00; G01D5/12; G01R; G01R1/00; G01R1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1681047A
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US2045474A
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US2135511A
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US2255601A
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US2252464A
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US2330427A
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US2393669A
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US2329841A
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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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |