Patent CH176571A successfully refreshed from Google Patents.
Patent US2682376A successfully refreshed from Google Patents.
US2682376A
Expired / Lapsed
US
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Impeller for comminuting apparatus
Assignee: National Rubber Machinery Co
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Filing: 1950-08-09
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Granted: 1954-06-29
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Expires: 1970-08-09
Abstract
No abstract record available.
Inventors
- 👤 Paul A Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:25
CPC Classifications
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)
US1748050A
Cited
US1912408A
Cited
US2004573A
Cited
US2156075A
Cited
US2220729A
Cited
US2322058A
Cited
US2508583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |