Patent US2488714A successfully refreshed from Google Patents.
US2488714A
Expired / Lapsed
US
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Adjustable screen for hammer mills
Assignee: Individual
•
Filing: 1945-10-01
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Granted: 1949-11-22
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Expires: 1965-10-01
Abstract
No abstract record available.
Inventors
- 👤 Grayce A Delp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/282; B02C13/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US535080A
Cited
US836422A
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US1018440A
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US1707697A
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US2136214A
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US2095584A
Cited
US2227090A
Cited
US2258537A
Cited
US2440927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |