US2575980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter chain
Assignee: Joy Manufacturing Co
•
Filing: 1948-02-17
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Granted: 1951-11-20
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Expires: 1968-02-17
Abstract
No abstract record available.
Inventors
- 👤 Leon E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:10
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/191; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9319; Y10T83/9326; Y10T83/9329; Y10T83/9331; Y10T83/9336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1244785A
Cited
US1413101A
Cited
GB191486A
Cited
US1782172A
Cited
US1785495A
Cited
US1899326A
Cited
US1903772A
Cited
US2156726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |