Patent US2666535A successfully refreshed from Google Patents.
Patent US3154601A successfully refreshed from Google Patents.
US3154601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerator
Assignee: Fuller Co
•
Filing: 1959-08-06
•
Granted: 1964-10-27
•
Expires: 1979-08-06
Abstract
No abstract record available.
Inventors
- 👤 Anton A Kalinske
- 👤 Roy F Weston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:23
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/234; B01F23/2342; B01F23/23421; C02F3/14; C02F3/16; B01F23/2336; B01F23/23362; B01F27/00; B01F27/05; B01F27/11; B01F27/112; B01F27/1125; B01F27/19; B01F27/191; B01F27/80; B01F33/00; B01F33/50; B01F33/503; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/71
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
A SURFACE AERATOR OF THE TYPE SUPPLYING ATMOSPHERIC AIR TO A BODY OF LIQUID, SAID AERATOR COMPRISING A PLATE AND BLADE MEANS SUPPORTED BY SAID PLATE AND EXTENDING FROM THE PERIPHERY OF SAID PLATE INWARDLY PARTWAY TOWARD ITS CENTER, MEANS FOR SUPPORTING SAID AERATOR WITH ITS PLATE IN HORIZONTAL POSITION BELOW THE SURFACE OF SAID BODY OF LIQUID AND WITH SAID BLADE MEANS EXTENDING DOWNWARD THEREFROM, THE MAXIMUM DISTANCE BETWEEN SAID
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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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |