Patent US2429069A successfully refreshed from Google Patents.
US2429069A
Expired / Lapsed
US
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Electrical circuit controller
Assignee: Signal Engineering & Manufacturing Co
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Filing: 1943-10-20
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Granted: 1947-10-14
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Expires: 1963-10-20
Abstract
No abstract record available.
Inventors
- 👤 Howard J Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395609A
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US1176632A
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US1678407A
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US1790275A
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US1762075A
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US1942147A
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US1939286A
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US1935428A
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US2218908A
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US2351426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |