US2674810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating bulk materials
Assignee: FLSmidth and Co AS
•
Filing: 1952-04-26
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Granted: 1954-04-13
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Expires: 1972-04-26
Abstract
No abstract record available.
Inventors
- 👤 Sylvest Karl Jens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
F; F27; F27D; F27D15/00; F27D15/02; F27D15/0206; F27D15/0213; F27D2015/0246; F27D2015/026; F27D99/00; F27D2099/0085; F27D2099/0093; F27D3/00; F27D3/08; F27D99/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |