US2330221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for concentrating liquids which upon concentration deposit crystals and leave a residual concentrated liquor
Assignee: Buffalo Foundry & Machine Co
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Filing: 1937-10-04
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Granted: 1943-09-28
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Expires: 1957-10-04
Abstract
No abstract record available.
Inventors
- 👤 Martin J Kermer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:25
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/42; B; B01; B01D; B01D1/00; B01D1/26; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0031; B01D9/0036; B01D9/0059; Y; Y10; Y10S; Y10S159/00; Y10S159/25; Y10S159/34
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) | 1946-09-27 | 1947-03-29 | 1947-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-27 | 1951-03-29 | 1951-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-27 | 1955-03-29 | 1955-09-28 | $7700.00 | Window Closed / Lapsed |