Patent US2963758A successfully refreshed from Google Patents.
US2963758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fine grained metal castings
Assignee: Crucible Steel Company of America
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Filing: 1958-06-27
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Granted: 1960-12-13
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Expires: 1978-06-27
Abstract
No abstract record available.
Inventors
- 👤 Pestel Guenter
- 👤 Frederick C Langenberg
- 👤 Clyde R Honeycutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/122; B22D11/10; B22D11/11; B22D11/114; B22D11/115; B22D11/124; B22D27/00; B22D27/02; Y; Y10; Y10S; Y10S148/00; Y10S148/074
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |