US3019905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter element and assembly
Assignee: Swimquip Inc
•
Filing: 1959-12-15
•
Granted: 1962-02-06
•
Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 William O Baker
- 👤 Paul D Prizler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/62; B01D29/70; B01D29/74; B01D29/39; B01D29/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1227983A
Cited
US2084753A
Cited
US2263853A
Cited
GB617677A
Cited
FR1116405A
Cited
FR68095E
Cited
US2964194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |