Patent US2051933A successfully refreshed from Google Patents.
US2051933A
Expired / Lapsed
US
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Siphon apparatus for impregnating liquids with carbonic acid
Assignee: Individual
•
Filing: 1934-11-28
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Granted: 1936-08-25
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Expires: 1954-11-28
Abstract
No abstract record available.
Inventors
- 👤 Andvig Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/236; B01F23/2361; B01F33/00; B01F33/50; B01F33/501; B01F33/5014; Y; Y10; Y10S; Y10S261/00; Y10S261/07
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) | 1939-08-25 | 1940-02-24 | 1940-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-25 | 1944-02-24 | 1944-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-25 | 1948-02-24 | 1948-08-25 | $7700.00 | Window Closed / Lapsed |