US2456285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete feed and fertilizer mixer
Assignee: Individual
•
Filing: 1947-07-10
•
Granted: 1948-12-14
•
Expires: 1967-07-10
Abstract
No abstract record available.
Inventors
- 👤 John S Kamper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:51
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/1825; B01; B01F; B01F29/00; B01F29/40; B01F29/403; B01F29/4034; B01F29/60; C; C05; C05B; C05B1/00; C05B1/10; B01F29/4031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1453323A
Cited
US2176874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |