Patent US2546246A successfully refreshed from Google Patents.
US2546246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for centrifugally separating suspended particles from gases
Assignee: PRAT DANIEL CORP
•
Filing: 1947-06-10
•
Granted: 1951-03-27
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 Louis C Whiton
- 👤 John E Watson
- 👤 Charles B Mcbride
- 👤 Remington Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:13
CPC Classifications
B; B04; B04C; B04C1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US461801A
Cited
GB190222299A
Cited
GB190313034A
Cited
GB190808208A
Cited
GB156257A
Cited
US1886548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |