US3206176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aerating sewage
Assignee: Individual
•
Filing: 1963-02-14
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Granted: 1965-09-14
•
Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Peterson York
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; C02F3/207; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/2334; B01F23/23341; B01F23/2336; B01F23/23364; B01F23/233642; B01F23/40; B01F23/45; B01F23/454; B01F25/00; B01F25/20; B01F25/21; B01F27/00; B01F27/05; B01F27/11; B01F27/113; B01F27/80; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
APPARATUS FOR AERATING SEWAGE COMPRISING: (A) A CONDUIT; (B) AN IMPELLER DISPOSED AT A FIXED POINT IN SAID CONDUIT TO CREATE A FLOW THROUGH THE CONDUIT; (C) MEANS RESTRICTING THE CROSS-SECTION OF THE CONDUIT AT SAID IMPELLER; (D) A SOURCE OF AIR AT GREATER THAN ATMOSPHERIC PRESSURE;
Claim 2
Dependent Claim
47 words
APPARATUS FOR AERATING SEWAGE COMPRISING: (A) A CONDUIT; (B) AN IMPELLER DISPOSED AT A FIXED POINT IN SAID CONDUIT TO CREATE A FLOW THROUGH THE CONDUIT; (C) MEANS RESTRICTING THE CROSS-SECTION OF THE CONDUIT AT SAID IMPELLER; (D) A SOURCE OF AIR AT GREATER THAN ATMOSPHERIC PRESSURE;
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |