US2442224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for flaring or deforming ends of tubes
Assignee: Individual
•
Filing: 1944-09-28
•
Granted: 1948-05-25
•
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
2026-10-25 12:29
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US210088A
Cited
US410000A
Cited
US989805A
Cited
US935366A
Cited
US1383840A
Cited
US1740792A
Cited
US1829809A
Cited
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 |