US2446891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bending bimetallic articles
Assignee: SK Wellman Corp
•
Filing: 1944-01-29
•
Granted: 1948-08-10
•
Expires: 1964-01-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Tower
- 👤 Francis J Lowey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:58
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US87011A
Cited
US165819A
Cited
GB189411283A
Cited
US717080A
Cited
US936389A
Cited
US1580647A
Cited
US2133292A
Cited
US2152611A
Cited
US2198254A
Cited
US2190237A
Cited
US2337588A
Cited
US2289311A
Cited
US2372607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |