Patent US2966699A successfully refreshed from Google Patents.
US2966699A
Expired / Lapsed
US
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Ring roll presses
Assignee: Coal Industry Patents Ltd
•
Filing: 1956-10-16
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Granted: 1961-01-03
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Expires: 1976-10-16
Abstract
No abstract record available.
Inventors
- 👤 Gregory Harry Rex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:45
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/20; Y; Y10; Y10S; Y10S425/00; Y10S425/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US622801A
Cited
US1844972A
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US2128651A
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US2412299A
Cited
US2689976A
Cited
US2742668A
Cited
US2689977A
Cited
US2558693A
Cited
US2798253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |