US2990942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal conveyor
Assignee: Individual
•
Filing: 1957-10-21
•
Granted: 1961-07-04
•
Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Owen A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:40
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/08; D05B35/085; B; B65; B65G; B65G33/00; B65G33/24; B65G2201/00; B65G2201/04; B65G2201/045; B65G33/26; B65G33/30; Y; Y10; Y10S; Y10S198/00; Y10S198/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1785287A
Cited
US1867573A
Cited
US2038471A
Cited
US2131305A
Cited
US2225215A
Cited
US2360370A
Cited
US2815852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |