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Patent US2377189A successfully refreshed from Google Patents.
US2377189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous industrial filter
Assignee: Oliver United Filters Inc
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Filing: 1943-10-05
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Granted: 1945-05-29
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Expires: 1963-10-05
Abstract
No abstract record available.
Inventors
- 👤 Carroli M Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:54
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/20; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/46; B01D33/466
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) | 1948-05-28 | 1948-11-27 | 1949-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-28 | 1952-11-27 | 1953-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-28 | 1956-11-27 | 1957-05-29 | $7700.00 | Window Closed / Lapsed |