US2583812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration unit
Assignee: Briggs Filtration Co
•
Filing: 1947-06-05
•
Granted: 1952-01-29
•
Expires: 1967-06-05
Abstract
No abstract record available.
Inventors
- 👤 Southwick W Briggs
- 👤 Walter C Bauer
- 👤 Walter J Ewbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:42
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/003; Y; Y10; Y10S; Y10S210/00; Y10S210/06; Y10S210/07
Claims Analysis
Total Claims: 0
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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) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |