Patent US2573404A successfully refreshed from Google Patents.
US2573404A
Expired / Lapsed
US
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Thermal control means for induction motors
Assignee: Motors Liquidation Co
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Filing: 1949-07-14
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Granted: 1951-10-30
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Harry F Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1783520A
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US1830578A
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US2158288A
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US2304018A
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US2379602A
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US2417912A
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US2463935A
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US2483515A
Cited
US2447488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |