Patent US2874731A successfully refreshed from Google Patents.
US2874731A
Expired / Lapsed
US
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Wire forming apparatus
Assignee: WF and John Barnes Co
•
Filing: 1954-05-24
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Granted: 1959-02-24
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Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
B; B21; B21F; B21F1/00; B21F1/04; B21F45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1142242A
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US1141066A
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US1404830A
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US1843064A
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US2061579A
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US2130318A
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US2153936A
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US2286326A
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US2700991A
Cited
US2637365A
Cited
US2737212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |