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Patent US2428784A successfully refreshed from Google Patents.
US2428784A
Expired / Lapsed
US
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Magnetic motor starting switch
Assignee: LAMB ELECTRIC Co
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Filing: 1945-04-11
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Granted: 1947-10-14
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Expires: 1965-04-11
Abstract
No abstract record available.
Inventors
- 👤 James D Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:23
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1165904A
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US1483962A
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US1491396A
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US1533770A
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US1922806A
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FR845757A
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 |