US2502198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball mill lining element and composition for same
Assignee: Unifrax I LLC
•
Filing: 1942-08-28
•
Granted: 1950-03-28
•
Expires: 1962-08-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Benner
- 👤 Mcmullen John Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:00
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/22; C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1199042A
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US1966406A
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US2040051A
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US2044817A
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US2195950A
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US2079101A
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US2154318A
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US2196075A
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US2154153A
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GB497253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |