Patent US2491661A successfully refreshed from Google Patents.
US2491661A
Expired / Lapsed
US
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Tiltable feed means for grinders
Assignee: Grundler Crusher and Pulverizer Co
•
Filing: 1945-11-23
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Granted: 1949-12-20
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Expires: 1965-11-23
Abstract
No abstract record available.
Inventors
- 👤 William P Gruendler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:32
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/286; B02C2013/28618; B02C2013/28672; B02C2013/2869
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |