US2431623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying of extract solutions
Assignee: Krim-Ko Corp
•
Filing: 1945-01-08
•
Granted: 1947-11-25
•
Expires: 1965-01-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Siehrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:43
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/001; F26B25/002; F26B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |