Patent US2734342A successfully refreshed from Google Patents.
Patent US3029950A successfully refreshed from Google Patents.
US3029950A
Expired / Lapsed
US
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Combined septic tank and filter
Assignee: Individual
•
Filing: 1958-09-29
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Granted: 1962-04-17
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Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Frasca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:10
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; C02F3/2866; C02F3/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US800113A
Cited
US834776A
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US1002089A
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US1032700A
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US1266132A
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US1381615A
Cited
US1458796A
Cited
US1817572A
Cited
US2841286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |