US2525573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete mixer
Assignee: ARTHUR W CALDWELL
•
Filing: 1947-08-30
•
Granted: 1950-10-10
•
Expires: 1967-08-30
Abstract
No abstract record available.
Inventors
- 👤 Anthony G Zicovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:29
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4282; B28C5/4286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21827E
Cited
US824075A
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US891468A
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US1825261A
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US1999411A
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US2082752A
Cited
US2047317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |