US1885845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydraulic cement
Assignee: FLSmidth and Co AS
•
Filing: 1930-06-20
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Granted: 1932-11-01
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Expires: 1950-06-20
Abstract
No abstract record available.
Inventors
- 👤 Povl T Lindhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/02; F27B7/04; F27B2007/041; F27B7/14; F27B7/16; F27B7/161; F27B2007/165; F27B7/20; F27B7/36; F27B7/362; F27B2007/367; F27B7/2016
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) | 1935-11-01 | 1936-05-02 | 1936-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-01 | 1940-05-02 | 1940-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-01 | 1944-05-02 | 1944-11-01 | $7700.00 | Window Closed / Lapsed |