Patent US2442718A successfully refreshed from Google Patents.
US2442718A
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US
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Venting for mold cavities in centrifugally casting
Assignee: Individual
•
Filing: 1943-01-22
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Granted: 1948-06-01
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Expires: 1963-01-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Woock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06; B22D13/066; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US53993A
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US359484A
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US1657063A
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US1562029A
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US1823037A
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FR689906A
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US2214133A
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US2172798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |