US2501166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural stage tube mill
Assignee: MORTHLAND FARREL Inc
•
Filing: 1946-04-12
•
Granted: 1950-03-21
•
Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Reginald S Fraser
- 👤 Lead S Dak
- 👤 George W Morthland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:27
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1538620A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |