Patent US2442224A successfully refreshed from Google Patents.
US2442224A
Expired / Lapsed
US
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Machine for flaring or deforming ends of tubes
Assignee: Individual
•
Filing: 1944-09-28
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Granted: 1948-05-25
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Expires: 1964-09-28
Abstract
No abstract record available.
Inventors
- 👤 John L Vaill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:56
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210088A
Cited
US410000A
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US989805A
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US935366A
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US1383840A
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US1740792A
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US1829809A
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US1971251A
Cited
US1955356A
Cited
US2117543A
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 |