US2828922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crushing mill with hammer-rotor, and adjacent adjustable support carrying traveling-breaker-plate and screen
Assignee: Jeffrey Manufacturing Co
•
Filing: 1955-02-08
•
Granted: 1958-04-01
•
Expires: 1975-02-08
Abstract
No abstract record available.
Inventors
- 👤 Lloyd K Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/282
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1696213A
Cited
US1494302A
Cited
GB420162A
Cited
US2381661A
Cited
US2471068A
Cited
US2523004A
Cited
US2464774A
Cited
US2666589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |