Patent US2633339A successfully refreshed from Google Patents.
US2633339A
Expired / Lapsed
US
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Immersion type agitator and the like
Assignee: Individual
•
Filing: 1952-03-13
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Granted: 1953-03-31
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Expires: 1972-03-13
Abstract
No abstract record available.
Inventors
- 👤 George J Okulitch
- 👤 Igor V Zozulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:16
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/71; B01F27/61; B01F27/80; B01F27/91; B01F33/00; B01F33/45; B01F33/453; B01F33/86; B01F35/00; B01F35/30; B01F35/33; B01F35/40; B01F35/41; B01F35/411; B01F35/4112; B01F2035/35; B01F2035/351; B01F2035/3512
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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |