US3047131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt conveyors
Assignee: Mining Engineering Co Ltd MECO
•
Filing: 1959-09-01
•
Granted: 1962-07-31
•
Expires: 1979-09-01
Abstract
No abstract record available.
Inventors
- 👤 Duncan Angus Wellesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:04
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/10; B65G39/12; B65G39/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US909833A
Cited
US754335A
Cited
US1222480A
Cited
DE726577C
Cited
US2295907A
Cited
FR890337A
Cited
US2781124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |