Patent US2762492A successfully refreshed from Google Patents.
US2762492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable extensible mine conveyor
Assignee: Joy Manufacturing Co
•
Filing: 1950-12-29
•
Granted: 1956-09-11
•
Expires: 1970-12-29
Abstract
No abstract record available.
Inventors
- 👤 Richard J Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:11
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/10; B65G21/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US263846A
Cited
US358551A
Cited
US362571A
Cited
US1453393A
Cited
US1557368A
Cited
US2534054A
Cited
US2576217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |