US2459944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator
Assignee: Sharples Corp
•
Filing: 1943-10-01
•
Granted: 1949-01-25
•
Expires: 1963-10-01
Abstract
No abstract record available.
Inventors
- 👤 Leo D Jones
- 👤 Hugh S Barnaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:31
CPC Classifications
B; B04; B04B; B04B1/00; B01; B01D; B01D45/00; B01D45/12; B01D45/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1303207A
Cited
US774851A
Cited
US881723A
Cited
US1008896A
Cited
US1363699A
Cited
US2126481A
Cited
US2173579A
Cited
US2143144A
Cited
US2171843A
Cited
GB475884A
Cited
GB481257A
Cited
US2406441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |