US2768733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow tract conveyer
Assignee: CHAINVEYOR CORP
•
Filing: 1951-07-16
•
Granted: 1956-10-30
•
Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Eldon M Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
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)
DE660320C
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US696193A
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US763897A
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US869488A
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US1000107A
Cited
US1310954A
Cited
US1949691A
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US2057173A
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US2101685A
Cited
US2309587A
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US2569947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |