Patent US1843516A successfully refreshed from Google Patents.
US2083837A
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Liquid treating apparatus
Assignee: Pfaudler Inc
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Filing: 1932-10-27
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Granted: 1937-06-15
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Expires: 1952-10-27
Abstract
No abstract record available.
Inventors
- 👤 Rudolph F Goecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:34
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/1303; F; F28; F28F; F28F2280/00; F28F2280/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-06-14 | 1940-12-14 | 1941-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-14 | 1944-12-14 | 1945-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-14 | 1948-12-14 | 1949-06-15 | $7700.00 | Window Closed / Lapsed |