Patent US2528442A successfully refreshed from Google Patents.
US2528442A
Expired / Lapsed
US
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Power chuck
Assignee: Gisholt Machine Co
•
Filing: 1945-03-15
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Granted: 1950-10-31
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Expires: 1965-03-15
Abstract
No abstract record available.
Inventors
- 👤 Leifer Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:59
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/28; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1291; Y10T279/19; Y10T279/1926; Y10T279/27; Y10T279/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1441803A
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US1699359A
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FR575507A
Cited
US1509510A
Cited
US1565733A
Cited
US1772203A
Cited
US1713801A
Cited
US2358049A
Cited
US2423244A
Cited
US2372592A
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 |