US3430932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for contacting continuous and disperse phase substances
Assignee: Entoleter Inc
•
Filing: 1967-09-18
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Granted: 1969-03-04
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Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 William L Kuechler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/06; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F23/213; B01F23/2131; B01F23/21311; B01F27/00; B01F27/80; B01F27/81
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061469A
Cited
US1879582A
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US1898807A
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US2213881A
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US2235998A
Cited
US2840454A
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US2847083A
Cited
US2941872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |