Patent US2901189A successfully refreshed from Google Patents.
US2901189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cone crushing mechanism
Assignee: Pettibone Traverse Lift LLC
•
Filing: 1954-08-23
•
Granted: 1959-08-25
•
Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Robert D Conway
- 👤 The First National Philadelphi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:42
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/045
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2326750A
Cited
US2359987A
Cited
US2430359A
Cited
US2680571A
Cited
US2579238A
Cited
US2634061A
Cited
US2791383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |