US3395800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment and apparatus therefor
Assignee: EDWIN B FALL JR
•
Filing: 1965-07-23
•
Granted: 1968-08-06
•
Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Leon S Kraus
- 👤 Jr Edwin B Fall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0087; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2433; B01D21/2438
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |