US2737490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for aquaria
Assignee: Individual
•
Filing: 1954-06-10
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Granted: 1956-03-06
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Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert A Lambertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A FILTER OF THE CLASS DESCRIBED COMPRISING A TANK ADAPTED TO CONTAIN FILTERING MATERIAL AND TO BE SUPPORTED ON AND EXTERIORLY OF AN AQUARIUM, SAID TANK INCLUDING A FRONT WALL, A PAIR OF LATERALLY SPACED SUBSTANTIALLY HORIZONTAL TUBULAR MEMBERS EXTENDING THROUGH THE UPPER PORTION OF SAID FRONT WALL AT SUBSTANTIALLY THE SAME LEVEL, MEANS FOR CONTINUOUSLY DELIVERING THE FOUL WATER FROM THE AQUARIUM TO THE UPPER PORTION OF SAID TANK, AND SIPHON LEGS ATTACHED TOTHE INNER AND OUTER ENDS OF ONE OF SAID TUBULAR MEMBERS FOR RETURNING THE FILTERED WATER FROM SAID TANK TO THE AQUARIUM, THE OTHER OF SAID TUBULAR MEMBERS CONSTITUTING A DUCT FOR RETURNING ANY EXCESS AMOUNT OF WATER DELIVERED TO SAID TANK, BACK INTO THE AQUARIUM.
Claim 2
Dependent Claim
120 words
A FILTER OF THE CLASS DESCRIBED COMPRISING A TANK ADAPTED TO CONTAIN FILTERING MATERIAL AND TO BE SUPPORTED ON AND EXTERIORLY OF AN AQUARIUM, SAID TANK INCLUDING A FRONT WALL, A PAIR OF LATERALLY SPACED SUBSTANTIALLY HORIZONTAL TUBULAR MEMBERS EXTENDING THROUGH THE UPPER PORTION OF SAID FRONT WALL AT SUBSTANTIALLY THE SAME LEVEL, MEANS FOR CONTINUOUSLY DELIVERING THE FOUL WATER FROM THE AQUARIUM TO THE UPPER PORTION OF SAID TANK, AND SIPHON LEGS ATTACHED TOTHE INNER AND OUTER ENDS OF ONE OF SAID TUBULAR MEMBERS FOR RETURNING THE FILTERED WATER FROM SAID TANK TO THE AQUARIUM, THE OTHER OF SAID TUBULAR MEMBERS CONSTITUTING A DUCT FOR RETURNING ANY EXCESS AMOUNT OF WATER DELIVERED TO SAID TANK, BACK INTO THE AQUARIUM.
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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |