Patent US2686618A successfully refreshed from Google Patents.
US2686618A
Expired / Lapsed
US
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Screw actuated hopper feeder
Assignee: Individual
•
Filing: 1950-01-24
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Granted: 1954-08-17
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Expires: 1970-01-24
Abstract
No abstract record available.
Inventors
- 👤 Mateer George Diehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:16
CPC Classifications
B; B65; B65B; B65B37/00; B65B37/08; B65B37/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551852A
Cited
US1282318A
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US1658247A
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US1752956A
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US1892217A
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US2369359A
Cited
US2525256A
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US2525973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |