Patent US3257835A successfully refreshed from Google Patents.
US3257835A
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US
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Method of hot forming metal
Assignee: Southwire Co LLC
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Filing: 1964-11-12
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Granted: 1966-06-28
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Cofer
- 👤 George C Ward
- 👤 Dale D Proctor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:41
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/02; B; B21; B21B; B21B1/00; B21B1/46; B21B3/00; B21B3/003; B21B9/00; B22; B22D; B22D11/00; B22D11/06; B22D11/0602; B22D11/12; B22D11/1206; C21; C21D; C21D1/00; C21D1/74; C21D7/00; C21D7/13; B21B2003/001; B21B2003/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD OF PRODUCING A HOT-FORMED PRODUCT COMPRISING CASTING MOLTEN METAL TO OBTAIN CAST METAL, HOT WORKING SAID CAST METAL INTO A HOT-FORMED PRODUCT, AND SUBSTANTIALLY ENCLOSING SAID CAST METAL IN AN OXIDE REDUCING ENVIRONMENT DURING SAID HOT WORKING.
Claim 2
Independent Claim
39 words
A METHOD OF PRODUCING A HOT-FORMED PRODUCT COMPRISING CASTING MOLTEN METAL TO OBTAIN CAST METAL, HOT WORKING SAID CAST METAL INTO A HOT-FORMED PRODUCT, AND SUBSTANTIALLY ENCLOSING SAID CAST METAL IN AN OXIDE REDUCING ENVIRONMENT DURING SAID HOT WORKING.
References Cited (Backward Citations)
US563462A
Cited
US668665A
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US1968442A
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US1904419A
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US2099208A
Cited
US2337008A
Cited
US2490549A
Cited
US3147521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |