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Patent US2656739A successfully refreshed from Google Patents.
US2656739A
Expired / Lapsed
US
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Method of forging a headed element
Assignee: Greenlee Brothers and Co
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Filing: 1950-10-06
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Granted: 1953-10-27
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Judson H Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:11
CPC Classifications
B; B21; B21J; B21J13/00; B21J13/02; B21J13/025; B21K; B21K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US75454A
Cited
US88760A
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US128083A
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US626234A
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US943335A
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US1184111A
Cited
US1934752A
Cited
US1957924A
Cited
US2024593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |