US2727733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Batch feeding and mixing apparatus
Assignee: Individual
•
Filing: 1953-08-12
•
Granted: 1955-12-20
•
Expires: 1973-08-12
Abstract
No abstract record available.
Inventors
- 👤 Carswell Frank Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/0422; B28C7/0431; E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |