Patent US2617600A successfully refreshed from Google Patents.
US2617600A
Expired / Lapsed
US
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Screen with slot-and-circular opening-pattern for hammer mills
Assignee: VIKING Manufacturing CO
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Filing: 1950-07-26
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Granted: 1952-11-11
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Expires: 1970-07-26
Abstract
No abstract record available.
Inventors
- 👤 Evan L Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:29
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/469; B02; B02C; B02C13/00; B02C13/26; B02C13/282; B02C13/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21523E
Cited
AT19449B
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US1185620A
Cited
US1698758A
Cited
US1973074A
Cited
US2049808A
Cited
US2279219A
Cited
US2420966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |