US2248634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of concentration
Assignee: Linde GmbH
•
Filing: 1937-10-02
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Granted: 1941-07-08
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Expires: 1957-10-02
Abstract
No abstract record available.
Inventors
- 👤 Georg A Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/32; A23F5/46; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06; Y; Y10; Y10S; Y10S159/00; Y10S159/05; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/937
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) | 1944-07-07 | 1945-01-06 | 1945-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-07 | 1949-01-06 | 1949-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-07 | 1953-01-06 | 1953-07-08 | $7700.00 | Window Closed / Lapsed |