Patent US3024913A successfully refreshed from Google Patents.
US3024913A
Expired / Lapsed
US
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Porous distributor plate assembly
Assignee: Dow Chemical Co
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Filing: 1957-07-24
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Granted: 1962-03-13
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Expires: 1977-07-24
Abstract
No abstract record available.
Inventors
- 👤 Alvin M Edmunds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/10; B03B5/12; B03B5/18; B01; B01J; B01J47/00; B01J47/02; B01J47/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190501143A
Cited
GB190900772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |