US2989291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mixing machine for concrete and similar substances
Assignee: Individual
•
Filing: 1958-07-14
•
Granted: 1961-06-20
•
Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Julius W Bedner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:00
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/20; B28C5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US221364A
Cited
US409560A
Cited
US869522A
Cited
US1858796A
Cited
US1861416A
Cited
US2080508A
Cited
US2700533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |