US993791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner for centrifugal liquid-separators.
Assignee: GUSTAF OSCAR WALLENBERG
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Filing: 1905-08-19
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Granted: 1911-05-30
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Expires: 1925-08-19
Abstract
No abstract record available.
Inventors
- 👤 Olof Ohlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:57
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/04; B04B1/08; B04B7/00; B04B7/02; B04B7/08; B04B7/12; B04B7/14
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) | 1914-05-29 | 1914-11-28 | 1915-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-05-29 | 1918-11-28 | 1919-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-05-29 | 1922-11-28 | 1923-05-30 | $7700.00 | Window Closed / Lapsed |