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Patent US852666A successfully refreshed from Google Patents.
US852666A
Expired / Lapsed
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Centrifugal machine.
Assignee: Alfa Laval Holdings Amsterdam AB
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Filing: 1906-07-26
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Granted: 1907-05-07
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Expires: 1926-07-26
Abstract
No abstract record available.
Inventors
- 👤 Birger Ljungstroem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:22
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1910-05-06 | 1910-11-05 | 1911-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-05-06 | 1914-11-05 | 1915-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-05-06 | 1918-11-05 | 1919-05-07 | $7700.00 | Window Closed / Lapsed |