US3052401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating device for centrifugal separators
Assignee: Alfa Laval Holdings Amsterdam AB
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Filing: 1958-12-23
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Granted: 1962-09-04
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Expires: 1978-12-23
Abstract
No abstract record available.
Inventors
- 👤 Thylefors Henric Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:41
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02; B04B1/00; B04B1/04; B04B1/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87829; Y10T137/87837
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |