Patent US2528023A successfully refreshed from Google Patents.
US2528023A
Expired / Lapsed
US
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Stator for electric machines
Assignee: Hartford National Bank and Trust Co
•
Filing: 1947-02-05
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Granted: 1950-10-31
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Expires: 1967-02-05
Abstract
No abstract record available.
Inventors
- 👤 Antonius Hubertus Victor Lijf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:20
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146; H02K1/148; H02K1/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US588602A
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US680597A
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US829015A
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US966246A
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US1554438A
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FR635295A
Cited
US2243318A
Cited
US2212192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |