US3043433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment plant
Assignee: Individual
•
Filing: 1961-05-17
•
Granted: 1962-07-10
•
Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Singer Oscar Caton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/22; C02F3/223; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1179658A
Cited
GB176957A
Cited
US1867824A
Cited
US2083347A
Cited
US2538412A
Cited
US2669440A
Cited
US2779731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |