Patent US2808146A successfully refreshed from Google Patents.
US2808146A
Expired / Lapsed
US
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Endless conveyors
Assignee: Individual
•
Filing: 1953-09-22
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Granted: 1957-10-01
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Expires: 1973-09-22
Abstract
No abstract record available.
Inventors
- 👤 John M Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/385; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US841821A
Cited
US1930607A
Cited
US2187498A
Cited
US2372199A
Cited
US2356540A
Cited
US2485215A
Cited
US2609082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |