US3022893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing mechanism for oscillatable separators
Assignee: Allis Chalmers Corp
•
Filing: 1960-01-25
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Granted: 1962-02-27
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Howard A Hasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:43
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |