US1948328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll machine for preparing foundry sand
Assignee: Standard Sand & Machine Co
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Filing: 1930-12-08
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Granted: 1934-02-20
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Expires: 1950-12-08
Abstract
No abstract record available.
Inventors
- 👤 Harry E Boughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0459; B01; B01F; B01F29/00; B01F29/25; B01F29/60; B01F29/64; B01F29/40; B01F29/403; B01F29/4033; Y; Y10; Y10S; Y10S241/00; Y10S241/10
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) | 1937-02-19 | 1937-08-21 | 1938-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-19 | 1941-08-21 | 1942-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-19 | 1945-08-21 | 1946-02-20 | $7700.00 | Window Closed / Lapsed |