Patent US2415989A successfully refreshed from Google Patents.
US2415989A
Expired / Lapsed
US
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Drive mechanism for concrete mixers
Assignee: Jaeger Machine Co
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Filing: 1944-07-27
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Granted: 1947-02-18
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Expires: 1964-07-27
Abstract
No abstract record available.
Inventors
- 👤 Clarence I Bohmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:30
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4206; B28C5/421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB362397A
Cited
US1872624A
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US1983891A
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US2018112A
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US2063574A
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US2029126A
Cited
US2226104A
Cited
US2368402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |