Patent US2765899A successfully refreshed from Google Patents.
US2765899A
Expired / Lapsed
US
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Dry feeder
Assignee: US Filter Wallace and Tiernan Inc
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Filing: 1952-04-29
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Granted: 1956-10-09
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Expires: 1972-04-29
Abstract
No abstract record available.
Inventors
- 👤 John S Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:38
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24; B65G33/34; B65G33/38
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |