US2195887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional condenser
Assignee: Individual
•
Filing: 1937-02-05
•
Granted: 1940-04-02
•
Expires: 1957-02-05
Abstract
No abstract record available.
Inventors
- 👤 Meinhard H Kotzebue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:35
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0033; B01D5/0036; B01D5/0003; B01D5/0012; F; F28; F28B; F28B9/00; F28B9/08; F28F; F28F9/00; F28F9/007; F28F9/013; F28F2265/00; F28F2265/26; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/217; Y10S165/221; Y10S165/222
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) | 1943-04-02 | 1943-10-02 | 1944-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-02 | 1947-10-02 | 1948-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-02 | 1951-10-02 | 1952-04-02 | $7700.00 | Window Closed / Lapsed |