US3498459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for biological treatment of raw waste water
Assignee: LYCO SYSTEMS Inc
•
Filing: 1969-03-24
•
Granted: 1970-03-03
•
Expires: 1989-03-24
Abstract
No abstract record available.
Inventors
- 👤 Botho Bohnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:34
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/30; C02F3/02; C02F3/12; C02F3/14; C02F3/16; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2509683A
Cited
US2573941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |