US3419150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum filter of molded construction
Assignee: Eimco Corp
•
Filing: 1967-09-21
•
Granted: 1968-12-31
•
Expires: 1987-09-21
Abstract
No abstract record available.
Inventors
- 👤 Steven S Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:49
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/044; B01D33/048; B01D33/06; B01D33/073; B01D33/09; B01D33/44; B01D33/46; B01D33/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1868883A
Cited
US2124828A
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US2454134A
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US2669910A
Cited
US2823806A
Cited
US3175691A
Cited
US3013666A
Cited
US3225935A
Cited
US3356224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |