US3294239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquarium aerator
Assignee: Individual
•
Filing: 1963-03-15
•
Granted: 1966-12-27
•
Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Dayes Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:49
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A FILTER AND AERATOR FOR USE IN AN AQUARIUM TANK CONTAINING WATER, A BED OF COMMINUTED PARTICLES ON THE FLOOR OF SAID TANK AND A SOURCE OF AIR UNDER PRESSURE, SAID FILTER AND AERATOR COMPRISING: AN IMPERFORATE HOUSING HAVING A TOP WALL OF AN AREA COMPARABLE TO THE WATER SURFACE AND SIDE WALLS EXTENDING SUBSTANTIALLY THERETO; OPENINGS IN THE LOWER EDGE OF SAID SIDE WALLS TO FACILITATE FLOW OF LIQUID THROUGH THE ENTIRE THICKNESS OF SAID BED AND INTO SAID HOUSING; AN OUTLET CONDUIT HAVING AN END DISPOSED BELOW THE LEVEL OF SAID TOP WALL FOR THE DISCHARGE OF LIQUID AND AIR FROM SAID HOUSING, A TOP FILTER INTO WHICH SAID
Claim 2
Dependent Claim
111 words
A FILTER AND AERATOR FOR USE IN AN AQUARIUM TANK CONTAINING WATER, A BED OF COMMINUTED PARTICLES ON THE FLOOR OF SAID TANK AND A SOURCE OF AIR UNDER PRESSURE, SAID FILTER AND AERATOR COMPRISING: AN IMPERFORATE HOUSING HAVING A TOP WALL OF AN AREA COMPARABLE TO THE WATER SURFACE AND SIDE WALLS EXTENDING SUBSTANTIALLY THERETO; OPENINGS IN THE LOWER EDGE OF SAID SIDE WALLS TO FACILITATE FLOW OF LIQUID THROUGH THE ENTIRE THICKNESS OF SAID BED AND INTO SAID HOUSING; AN OUTLET CONDUIT HAVING AN END DISPOSED BELOW THE LEVEL OF SAID TOP WALL FOR THE DISCHARGE OF LIQUID AND AIR FROM SAID HOUSING, A TOP FILTER INTO WHICH SAID
References Cited (Backward Citations)
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |