US2825422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion separator
Assignee: Individual
•
Filing: 1954-09-16
•
Granted: 1958-03-04
•
Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 Otto B Schoenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2319962A
Cited
US2474475A
Cited
US2528032A
Cited
US2713919A
Cited
US2664963A
Cited
US2717081A
Cited
US2765917A
Cited
US2783854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |