US3434598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating sewage or industrial waste liquids
Assignee: Dejo Inc
•
Filing: 1968-04-16
•
Granted: 1969-03-25
•
Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1242; C02F2001/007; C02F2201/00; C02F2201/008; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US922025A
Cited
US1271925A
Cited
US2382490A
Cited
US2393976A
Cited
US2889929A
Cited
US3186700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |