Patent US1366479A successfully refreshed from Google Patents.
US1366479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making cement and by-products
Assignee: Individual
•
Filing: 1920-06-01
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Granted: 1921-01-25
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Expires: 1940-06-01
Abstract
No abstract record available.
Inventors
- 👤 Spencer B Newberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:07
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/34; F27B7/02; F27B7/04; F27B2007/043; F27D; F27D99/00; F27D99/0001; F27D99/0033; F27D2099/0046; F27D2099/0048
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) | 1924-01-25 | 1924-07-26 | 1925-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-01-25 | 1928-07-26 | 1929-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-01-25 | 1932-07-26 | 1933-01-25 | $7700.00 | Window Closed / Lapsed |