US3013316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for vacuum casting
Assignee: United States Steel Corp
•
Filing: 1958-12-31
•
Granted: 1961-12-19
•
Expires: 1978-12-31
Abstract
No abstract record available.
Inventors
- 👤 John N Hornak
- 👤 Michael A Orehoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:33
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06; C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 0
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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) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |