US1456046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of treating sewage
Assignee: Individual
•
Filing: 1921-02-14
•
Granted: 1923-05-22
•
Expires: 1941-02-14
Abstract
No abstract record available.
Inventors
- 👤 John P Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/12; C02F11/13; C02F11/131; Y; Y10; Y10S; Y10S159/00; Y10S159/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-05-21 | 1926-11-20 | 1927-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-21 | 1930-11-20 | 1931-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-21 | 1934-11-20 | 1935-05-22 | $7700.00 | Window Closed / Lapsed |