Patent US2906404A successfully refreshed from Google Patents.
US2906404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator
Assignee: Individual
•
Filing: 1954-06-09
•
Granted: 1959-09-29
•
Expires: 1974-06-09
Abstract
No abstract record available.
Inventors
- 👤 Orelli Daniel
- 👤 Beauquesne Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/107; B04C9/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2588106A
Cited
US718358A
Cited
US2153026A
Cited
US2590754A
Cited
GB608026A
Cited
US2648433A
Cited
US2665809A
Cited
DE870531C
Cited
US2710664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |