Patent US3420443A successfully refreshed from Google Patents.
US3420443A
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Apparatus for dividing liquid into uniformly distributed flows
Assignee: Stamicarbon BV
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Filing: 1966-05-02
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Granted: 1969-01-07
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Christianus W J Van Koppen
- 👤 Cornelis Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:54
CPC Classifications
B; B07; B07B; B07B1/00; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/44; B03B5/447; B07B2230/00; B07B2230/01; Y; Y10; Y10T; Y10T137/00; Y10T137/8593
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |