US1394294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding in ball-mills
Assignee: FLSmidth and Co AS
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Filing: 1921-03-15
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Granted: 1921-10-18
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Expires: 1941-03-15
Abstract
No abstract record available.
Inventors
- 👤 Fasting Johan Sigismund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:12
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/18; F26B3/20; F26B3/205; B; B02; B02C; B02C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-10-17 | 1925-04-18 | 1925-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-10-17 | 1929-04-18 | 1929-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-10-17 | 1933-04-18 | 1933-10-18 | $7700.00 | Window Closed / Lapsed |