US1912784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary adsorber unit
Assignee: Silica Gel Corp
•
Filing: 1931-03-31
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Granted: 1933-06-06
•
Expires: 1951-03-31
Abstract
No abstract record available.
Inventors
- 👤 Ernest B Miller
- 👤 Bayard P Fonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/18; F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F2203/00; F24F2203/10; F24F2203/1004; F24F2203/1016; F24F2203/102; F24F2203/1032; F24F2203/104; F24F2203/1056; F24F2203/1068; F24F2203/1072; F24F2203/1076; F24F2203/108; F24F2203/1084; F24F2203/1096; Y; Y10; Y10S; Y10S261/00; Y10S261/34
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) | 1936-06-05 | 1936-12-05 | 1937-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-05 | 1940-12-05 | 1941-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-05 | 1944-12-05 | 1945-06-06 | $7700.00 | Window Closed / Lapsed |