US2469775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for rolling flanges on tubes
Assignee: Curtiss Wright Corp
•
Filing: 1944-07-20
•
Granted: 1949-05-10
•
Expires: 1964-07-20
Abstract
No abstract record available.
Inventors
- 👤 Earle F Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:19
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/02; B21D19/04; B21D19/046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1304938A
Cited
US1399383A
Cited
US758145A
Cited
US1076592A
Cited
US1421507A
Cited
US1472047A
Cited
US1696229A
Cited
US1807531A
Cited
US1983407A
Cited
US2313474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |