Patent US2848113A successfully refreshed from Google Patents.
US2848113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous belt filter and washing device for same
Assignee: Drug Processors Inc
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Filing: 1955-06-03
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Granted: 1958-08-19
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Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Laurene O Paterson
- 👤 Bragg Clyde Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:21
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/44; B01D33/46; B01D33/466
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |