Patent US863031A successfully refreshed from Google Patents.
US863031A
Expired / Lapsed
US
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Apparatus for treating foaming liquids.
Assignee: Individual
•
Filing: —
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Granted: 1907-08-13
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Expires: 1924-08-13
Abstract
No abstract record available.
Inventors
- 👤 Franz Heinrich Lehnert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:31
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0258; Y; Y10; Y10S; Y10S159/00; Y10S159/04
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) | 1910-08-12 | 1911-02-11 | 1911-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-08-12 | 1915-02-11 | 1915-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-08-12 | 1919-02-11 | 1919-08-13 | $7700.00 | Window Closed / Lapsed |