US2769779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifier for aquariums
Assignee: Individual
•
Filing: 1953-08-27
•
Granted: 1956-11-06
•
Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Vansteenkiste Mary Lo Mathilde
- 👤 Vansteenkiste Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1055082A
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US1193335A
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US1586292A
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US2069621A
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US2324838A
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US2293051A
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US2482062A
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US2711828A
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US2611750A
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US2676921A
Cited
US2636473A
Cited
US2674574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |