Patent US2774636A successfully refreshed from Google Patents.
US2774636A
Expired / Lapsed
US
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Hopper loaders
Assignee: Individual
•
Filing: 1955-10-21
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Granted: 1956-12-18
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Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Carl H Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:19
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/58; B29; B29C; B29C31/00; B29C31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |