US2610372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reducing the porosity of castings
Assignee: Individual
•
Filing: 1949-04-20
•
Granted: 1952-09-16
•
Expires: 1969-04-20
Abstract
No abstract record available.
Inventors
- 👤 Henry F Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:09
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/14; B22D17/08; B22D17/10; Y; Y10; Y10S; Y10S164/00; Y10S164/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1607677A
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US1697741A
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US1960992A
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GB507036A
Cited
US2210544A
Cited
US2181157A
Cited
US2209882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |