Patent US2431173A successfully refreshed from Google Patents.
US2431173A
Expired / Lapsed
US
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Apparatus for stretch-shaping metal blanks to conform to convex curved dies
Assignee: TW and CB Sheridan Co
•
Filing: 1943-01-29
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Granted: 1947-11-18
•
Expires: 1963-01-29
Abstract
No abstract record available.
Inventors
- 👤 Hawkes Thomas Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:45
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/02; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174607A
Cited
US1315937A
Cited
US757592A
Cited
US1078959A
Cited
US1148856A
Cited
US1185990A
Cited
US1461471A
Cited
US1710261A
Cited
US1794197A
Cited
US1858882A
Cited
US2006468A
Cited
US1968010A
Cited
US2043442A
Cited
US2129774A
Cited
US2123683A
Cited
US2269549A
Cited
US2245723A
Cited
US2279964A
Cited
US2218503A
Cited
US2292731A
Cited
US2259605A
Cited
US2289584A
Cited
US2342437A
Cited
US2327440A
Cited
US2301960A
Cited
US2346213A
Cited
US2371587A
Cited
US2326470A
Cited
US2378413A
Cited
US2357027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |