Patent US837695A successfully refreshed from Google Patents.
US837695A
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Centrifugal machine.
Assignee: Alfa Laval Holdings Amsterdam AB
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Filing: 1905-05-19
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Granted: 1906-12-04
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Expires: 1925-05-19
Abstract
No abstract record available.
Inventors
- 👤 Birger Ljungstroem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:39
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/20; B04B2001/2058; B04B2001/2066
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) | 1909-12-03 | 1910-06-04 | 1910-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-03 | 1914-06-04 | 1914-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-03 | 1918-06-04 | 1918-12-04 | $7700.00 | Window Closed / Lapsed |