Patent US2473673A successfully refreshed from Google Patents.
US2473673A
Expired / Lapsed
US
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Machine for straightening and sizing castings, forgings, stampings, or the like
Assignee: Individual
•
Filing: 1945-12-04
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Granted: 1949-06-21
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Expires: 1965-12-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:48
CPC Classifications
B; B21; B21D; B21D3/00; B21D3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787059A
Cited
US1258424A
Cited
US1664904A
Cited
US1672044A
Cited
US1823557A
Cited
US1973890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |