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US2472725A
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Crushing and grinding machine
Assignee: RUDOLPH L PUMMER
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Filing: 1945-11-26
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Granted: 1949-06-07
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Expires: 1965-11-26
Abstract
No abstract record available.
Inventors
- 👤 George W Rundle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:15
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; E; E03; E03C; E03C1/00; E03C1/12; E03C1/26; E03C1/266; E03C1/2665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US12977A
Cited
US66536A
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DE572572C
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US996958A
Cited
US1459713A
Cited
US1968515A
Cited
US2172886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |