US2275117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for preheating or drying slurry
Assignee: FLSmidth and Co AS
•
Filing: 1939-07-22
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Granted: 1942-03-03
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Expires: 1959-07-22
Abstract
No abstract record available.
Inventors
- 👤 Vogel-Jorgensen Mikael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:13
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F26; F26B; F26B11/00; F26B11/02; F26B11/04; F26B11/0463; F26B11/0468; F26B11/0472; Y; Y10; Y10S; Y10S159/00; Y10S159/29
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) | 1945-03-02 | 1945-09-01 | 1946-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-02 | 1949-09-01 | 1950-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-02 | 1953-09-01 | 1954-03-03 | $7700.00 | Window Closed / Lapsed |