Patent US3517357A successfully refreshed from Google Patents.
US3069014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool filter device
Assignee: Individual
•
Filing: 1959-04-20
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Granted: 1962-12-18
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Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Lewis Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/88; B01D29/92; B01D29/39; B01D29/41; B01D29/62; B01D29/70; B01D29/74; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR403107A
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GB655385A
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US2426618A
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US2444147A
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US2592527A
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US2697524A
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US2785806A
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FR1090663A
Cited
US2788901A
Cited
US2863561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |