US2773828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubble energized filter for aquarium
Assignee: Individual
•
Filing: 1954-04-12
•
Granted: 1956-12-11
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Dominic P Schiavo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:16
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A FILTER FOR AN AQUARIUM WHEREIN A FLOW OF WATER IS INDUCED THROUGH A BED OF FILTERING MATERIAL BY A STREAM OF BUBBLES PASSING INWARDLY THROUGH THE UPRIGHT PORTION OF A T-SHAPED TUBE FITTING; A CUP-SHAPED RECEPTACLE FOR HOLDING A SUPPLY OF FILTERING MATERIAL AND FOR MOUNTING IN UPRIGHT SUBMERGED CONDITION IN AN AQUARIUM, A COVER HAVING A PLURALITY OF PERFORATIONS THEREIN REMOVABLYL ATTACHED OVER THE OPEN UPPEN END OF THE RECEPTACLE, AN UPRIGHT STAND-PIPE FITTED INTO AN OPENING IN THE COVER THE INSERTION THROUGH FILTERING MATERIAL TO THE BOTTOM OF THE RECEPTACLE, THE UPPER END OF THE STAND-PIPE PROJECTING ABOVE THE COVER FOR CONNECTION OF THE UPRIGHT PORTION OF A T-FITTING THERETO, AND A PROJECTING ON THE STAND-PIPE
Claim 2
Dependent Claim
120 words
IN A FILTER FOR AN AQUARIUM WHEREIN A FLOW OF WATER IS INDUCED THROUGH A BED OF FILTERING MATERIAL BY A STREAM OF BUBBLES PASSING INWARDLY THROUGH THE UPRIGHT PORTION OF A T-SHAPED TUBE FITTING; A CUP-SHAPED RECEPTACLE FOR HOLDING A SUPPLY OF FILTERING MATERIAL AND FOR MOUNTING IN UPRIGHT SUBMERGED CONDITION IN AN AQUARIUM, A COVER HAVING A PLURALITY OF PERFORATIONS THEREIN REMOVABLYL ATTACHED OVER THE OPEN UPPEN END OF THE RECEPTACLE, AN UPRIGHT STAND-PIPE FITTED INTO AN OPENING IN THE COVER THE INSERTION THROUGH FILTERING MATERIAL TO THE BOTTOM OF THE RECEPTACLE, THE UPPER END OF THE STAND-PIPE PROJECTING ABOVE THE COVER FOR CONNECTION OF THE UPRIGHT PORTION OF A T-FITTING THERETO, AND A PROJECTING ON THE STAND-PIPE
References Cited (Backward Citations)
US2024646A
Cited
US2293051A
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US2533936A
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US2676921A
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US2653908A
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US2614529A
Cited
US2674574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |