US2952329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for de-aerating liquids
Assignee: Individual
•
Filing: 1957-10-25
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Granted: 1960-09-13
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Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
- 👤 Richard G Cunningham
- 👤 Donald E Dahlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:10
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; F; F15; F15B; F15B21/00; F15B21/04; F15B21/044; F16; F16K; F16K24/00; F16K24/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |