Patent US2428675A successfully refreshed from Google Patents.
US2428675A
Expired / Lapsed
US
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Device for upsetting metal
Assignee: Engineering & Res Corp
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Filing: 1943-10-28
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Granted: 1947-10-07
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Expires: 1963-10-28
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:57
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/08; B21D11/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US126495A
Cited
GB189711660A
Cited
GB160816A
Cited
US1530272A
Cited
US1761887A
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US1761888A
Cited
US2010996A
Cited
US2023638A
Cited
US2202018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |