US2792910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator
Assignee: Individual
•
Filing: 1953-10-14
•
Granted: 1957-05-21
•
Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 Redniss Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/14; B04C5/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US371851A
Cited
US1454492A
Cited
US1509910A
Cited
GB344421A
Cited
US1854738A
Cited
US2377524A
Cited
US2616563A
Cited
AT170856B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |