US2695164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mining machine with oscillating groups of rotary cutters
Assignee: Lee Norse Co
•
Filing: 1950-05-03
•
Granted: 1954-11-23
•
Expires: 1970-05-03
Abstract
No abstract record available.
Inventors
- 👤 Einar M Arentzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:56
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE316292C
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US1079353A
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US981201A
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US1283880A
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US1200941A
Cited
DE628075C
Cited
US2261160A
Cited
US2269781A
Cited
US2244742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |