US2988282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid separating valve
Assignee: Individual
•
Filing: 1959-03-31
•
Granted: 1961-06-13
•
Expires: 1979-03-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Hottenroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:23
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0063; F; F22; F22D; F22D5/00; F22D5/08; F22D5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1656373A
Cited
US1816142A
Cited
US1844553A
Cited
US1979109A
Cited
US2513875A
Cited
US2538436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |