Patent US2533852A successfully refreshed from Google Patents.
US2533852A
Expired / Lapsed
US
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Process and apparatus for preparing concrete
Assignee: Individual
•
Filing: 1945-08-06
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Granted: 1950-12-12
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Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Tietig Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
B; B28; B28C; B28C9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304619A
Cited
US833014A
Cited
US1046437A
Cited
US1270332A
Cited
US1916417A
Cited
US1969533A
Cited
US2218533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |