US2831274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated shovel for granular bulk material
Assignee: Individual
•
Filing: 1955-03-09
•
Granted: 1958-04-22
•
Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Mentor C Addicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:26
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44; E; E02; E02F; E02F3/00; E02F3/04; E02F3/46; E02F3/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB123412A
Cited
US1910481A
Cited
US2109195A
Cited
US2280520A
Cited
US2639803A
Cited
US2646965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |