Patent US2557346A successfully refreshed from Google Patents.
US2557346A
Expired / Lapsed
US
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Multiple-bend metal-bending machine
Assignee: Individual
•
Filing: 1948-06-12
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Granted: 1951-06-19
•
Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Lee B Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:15
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/20; B21D11/203; B21D5/00; B21D5/04; B21D5/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1750550A
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US2275174A
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US2482617A
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US2465705A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |