US2568525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas hood for casting machines
Assignee: Huntington Alloys Corp
•
Filing: 1948-10-02
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Granted: 1951-09-18
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Expires: 1968-10-02
Abstract
No abstract record available.
Inventors
- 👤 Waddington Ralph Henry
- 👤 Welblund Albert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:39
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060135A
Cited
US2140607A
Cited
US2195071A
Cited
US2264288A
Cited
US2289484A
Cited
US2376518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |