US2650812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disintegrating and conveying chain
Assignee: Joy Manufacturing Co
•
Filing: 1949-03-29
•
Granted: 1953-09-01
•
Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:23
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE578555C
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US824839A
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GB405088A
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US2057684A
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US2289464A
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US2398675A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |