US3275547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating sewage
Assignee: Individual
•
Filing: 1964-07-20
•
Granted: 1966-09-27
•
Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Bucksteeg Wilhelm
- 👤 Thiele Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1226; C02F11/00; C02F11/10; C10; C10B; C10B53/00; F; F23; F23G; F23G5/00; F23G5/02; F23G5/027; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y02W10/40; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/903; Y10S210/904; Y10S210/918; Y10S210/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |