Patent US2440927A successfully refreshed from Google Patents.
US2440927A
Expired / Lapsed
US
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Adjustable two layered screen for hammer mills and remote control therefor
Assignee: Individual
•
Filing: 1945-03-23
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Granted: 1948-05-04
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Expires: 1965-03-23
Abstract
No abstract record available.
Inventors
- 👤 Boss Floris
- 👤 Nemic Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
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)
US632362A
Cited
US729883A
Cited
US818725A
Cited
US908618A
Cited
GB190911825A
Cited
DE442051C
Cited
US1634026A
Cited
US1839532A
Cited
US2227090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |