US2430407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hopper feed control
Assignee: BRADFORD B NELSON
•
Filing: 1946-07-18
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Granted: 1947-11-04
•
Expires: 1966-07-18
Abstract
No abstract record available.
Inventors
- 👤 James H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18; G01F23/185; B; B65; B65G; B65G47/00; B65G2814/00; B65G2814/03; B65G2814/0344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1301978A
Cited
US2381505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |