Patent US2442136A successfully refreshed from Google Patents.
US2442136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic chuck adapter
Assignee: Individual
•
Filing: 1944-01-17
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Granted: 1948-05-25
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Expires: 1964-01-17
Abstract
No abstract record available.
Inventors
- 👤 Aloysius B Luther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/15; B23Q3/154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US130036A
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US595607A
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US1082210A
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US1174887A
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US1551995A
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US1534865A
Cited
US1772126A
Cited
US2014156A
Cited
US2113874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |