US2536793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for centrifugal separators
Assignee: Alfa Laval Holdings Amsterdam AB
•
Filing: 1946-02-28
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Granted: 1951-01-02
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Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Andersson Gustav Harry
- 👤 Thylefors Henric Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:02
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B11/00; B04B11/02; B04B7/00; B04B2007/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1561784A
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US2302578A
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US2402224A
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US2404783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |