Patent US2073652A successfully refreshed from Google Patents.
US2073652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Central mixing plant
Assignee: Individual
•
Filing: 1936-03-12
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Granted: 1937-03-16
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Expires: 1956-03-12
Abstract
No abstract record available.
Inventors
- 👤 John F Robb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:57
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/0404; B28C7/0418; B28C5/00; B28C5/08; B28C5/18; B28C5/1825; B28C5/1843
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-03-15 | 1940-09-14 | 1941-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-15 | 1944-09-14 | 1945-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-15 | 1948-09-14 | 1949-03-16 | $7700.00 | Window Closed / Lapsed |