US2062994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aerating liquids
Assignee: JULIUS C VREDENBURG
•
Filing: 1932-12-27
•
Granted: 1936-12-01
•
Expires: 1952-12-27
Abstract
No abstract record available.
Inventors
- 👤 Higginson George Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:27
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/105; B01F23/00; B01F23/20; B01F23/23; B01F23/236; B01F23/2366
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-12-01 | 1940-06-01 | 1940-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-01 | 1944-06-01 | 1944-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-01 | 1948-06-01 | 1948-12-01 | $7700.00 | Window Closed / Lapsed |