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US2454030A
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Assignee: Briggs Filtration Co
•
Filing: 1944-09-27
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Granted: 1948-11-16
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Expires: 1964-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jay M Besore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:43
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; Y; Y10; Y10S; Y10S277/00; Y10S277/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1792189A
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US1985473A
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US2218800A
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US2200688A
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US2294262A
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US2313307A
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US2359118A
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US2360020A
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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) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |