US2590438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete mixing apparatus
Assignee: Individual
•
Filing: 1950-02-27
•
Granted: 1952-03-25
•
Expires: 1970-02-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Glenway Maxon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/1825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US886018A
Cited
US1237028A
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US1581492A
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US1943325A
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US2054469A
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US2099964A
Cited
US2175464A
Cited
US2273750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |