US2959289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter and dehydrator
Assignee: Briggs Filtration Co
•
Filing: 1956-04-04
•
Granted: 1960-11-08
•
Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Donald M Figert
- 👤 Michael G Grant
- 👤 Eichelberger Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/04; B01D17/045; B01D17/08; B01D17/10; Y; Y10; Y10S; Y10S210/00; Y10S210/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2490443A
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US2468382A
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US2626709A
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US2597475A
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US2625273A
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US2725986A
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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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |