Patent US1791765A successfully refreshed from Google Patents.
US2591987A
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Endless conveyer having retractable flights
Assignee: ZINSMASTER BAKING Co
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Filing: 1951-04-28
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Granted: 1952-04-08
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Expires: 1971-04-28
Abstract
No abstract record available.
Inventors
- 👤 Henry J Werden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/54; B65G2201/00; B65G2201/02
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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |