Patent US3023056A successfully refreshed from Google Patents.
US3023056A
Expired / Lapsed
US
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Concrete mixing drum and method of making same
Assignee: CONSTRUCTION MACHINERY CO
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Filing: 1959-05-04
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Granted: 1962-02-27
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Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Earl G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:11
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US813490A
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US1479173A
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US2198820A
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US2543594A
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US2543595A
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US2610043A
Cited
US2702217A
Cited
US2678198A
Cited
US2753163A
Cited
US2702218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |