US2477264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible feed chute
Assignee: Hughes Tool Co
•
Filing: 1944-05-13
•
Granted: 1949-07-26
•
Expires: 1964-05-13
Abstract
No abstract record available.
Inventors
- 👤 Charles B Pearson
- 👤 George R Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
B; B65; B65G; B65G11/00; B65G11/10; B65G11/103; F; F41; F41A; F41A9/00; F41A9/54; F41A9/56; F41A9/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2310884A
Cited
US2419315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |