Patent US1681085A successfully refreshed from Google Patents.
US1681085A
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US
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Flask for centrifugal sand molds
Assignee: BEATTY PALMER AND BEATTY
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Filing: 1927-05-12
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Granted: 1928-08-14
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Expires: 1947-05-12
Abstract
No abstract record available.
Inventors
- 👤 William H Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:24
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-08-14 | 1932-02-13 | 1932-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-14 | 1936-02-13 | 1936-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-14 | 1940-02-13 | 1940-08-14 | $7700.00 | Window Closed / Lapsed |