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US2204704A
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Double pan hopper
Assignee: Dayton Manufacturing Co
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Filing: 1939-02-03
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Granted: 1940-06-18
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Expires: 1959-02-03
Abstract
No abstract record available.
Inventors
- 👤 John C Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:22
CPC Classifications
B; B61; B61D; B61D35/00; B61D35/005; E; E03; E03D; E03D11/00; E03D11/02; E03D11/10; E03D5/00; E03D5/02; E03D5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-06-18 | 1943-12-18 | 1944-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-18 | 1947-12-18 | 1948-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-18 | 1951-12-18 | 1952-06-18 | $7700.00 | Window Closed / Lapsed |