US1834963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing cement
Assignee: Allis Chalmers Corp
•
Filing: 1928-07-23
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Granted: 1931-12-08
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Expires: 1948-07-23
Abstract
No abstract record available.
Inventors
- 👤 Ray C Newhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:54
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/32; F27B7/3205; F27B7/02; F27B2007/022; F27B2007/2008; F27B2007/3247; F27B2007/3252
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) | 1934-12-07 | 1935-06-08 | 1935-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-07 | 1939-06-08 | 1939-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-07 | 1943-06-08 | 1943-12-08 | $7700.00 | Window Closed / Lapsed |