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Patent US2907463A successfully refreshed from Google Patents.
US2907463A
Expired / Lapsed
US
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Septic and antiseptic sewage disposal unit
Assignee: Individual
•
Filing: 1957-02-07
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Granted: 1959-10-06
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Expires: 1977-02-07
Abstract
No abstract record available.
Inventors
- 👤 Light Douglas John Nelson
- 👤 Blair Bertrand Joaquin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:27
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; C02F3/286; C02F2201/00; C02F2201/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495834A
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US568620A
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US691365A
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US845520A
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US869001A
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US1177849A
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US1715438A
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US2246224A
Cited
US2572767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |