US2457387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyance of fluent materials
Assignee: Individual
•
Filing: 1945-04-21
•
Granted: 1948-12-28
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 Locker James Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:38
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/04; B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1802945A
Cited
DE670018C
Cited
US1080602A
Cited
US2094787A
Cited
US2253206A
Cited
US2312712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |