Patent US4148777A successfully refreshed from Google Patents.
Patent US2661158A successfully refreshed from Google Patents.
US2661158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock crusher having contained rock screening and cooperating grate means
Assignee: Individual
•
Filing: 1951-11-19
•
Granted: 1953-12-01
•
Expires: 1971-11-19
Abstract
No abstract record available.
Inventors
- 👤 Frank D Fogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:54
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US811671A
Cited
US1331969A
Cited
GB238117A
Cited
US1647183A
Cited
US2149571A
Cited
US2411302A
Cited
US2440388A
Cited
US2555879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |