Patent US2070011A successfully refreshed from Google Patents.
US2512604A
Expired / Lapsed
US
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Art of concentrating pharmaceutical and other liquids
Assignee: RCA Corp
•
Filing: 1944-10-03
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Granted: 1950-06-27
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Expires: 1964-10-03
Abstract
No abstract record available.
Inventors
- 👤 Rudolph A Bierwirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:44
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/048; B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/228; B01D3/00; B01D3/08; B01D3/10; F26B3/00; Y; Y10; Y10S; Y10S159/00; Y10S159/11; Y10S159/16; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2167881A
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GB518691A
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US2234166A
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US2308008A
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US2385567A
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US2343667A
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US2355887A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |