US2992722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mine conveyor
Assignee: Jeffrey Manufacturing Co
•
Filing: 1957-04-19
•
Granted: 1961-07-18
•
Expires: 1977-04-19
Abstract
No abstract record available.
Inventors
- 👤 Sterling C Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:41
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/02; B; B65; B65G; B65G37/00; E21C; E21C35/00; E21C35/20; B65G2812/00; B65G2812/01; B65G2812/012; B65G2812/014; B65G2812/015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US993737A
Cited
US1272564A
Cited
US1418724A
Cited
US1605507A
Cited
US1818168A
Cited
US2629484A
Cited
US2747721A
Cited
US2604201A
Cited
US2789682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |