Patent US2693268A successfully refreshed from Google Patents.
US2693268A
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Endless chain conveyer
Assignee: Joy Manufacturing Co
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Filing: 1951-03-01
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Granted: 1954-11-02
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Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:30
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/02; F16G13/04; B; B65; B65G; B65G17/00; B65G17/06; B65G17/08; F16G13/06; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US423069A
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US525526A
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US614847A
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US1224445A
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US1330116A
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US2180284A
Cited
US2351801A
Cited
US2587959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |