US2538656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding flask and method of molding
Assignee: BROWN IND Inc
•
Filing: 1947-05-17
•
Granted: 1951-01-16
•
Expires: 1967-05-17
Abstract
No abstract record available.
Inventors
- 👤 Karl T Rinderle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:50
CPC Classifications
B; B22; B22C; B22C21/00; B22C21/02; B22C9/00; B22C9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US652129A
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US710331A
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US738279A
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US1119418A
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DE364225C
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US1773732A
Cited
US1873176A
Cited
US1992677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |