Patent US2709420A successfully refreshed from Google Patents.
US2628447A
Expired / Lapsed
US
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Water aerator for fish containers
Assignee: Individual
•
Filing: 1949-11-28
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Granted: 1953-02-17
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Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
- 👤 Royce M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:33
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US925625A
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US1197447A
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US1611310A
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US2137397A
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US2194037A
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US2261830A
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US2294136A
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US2471573A
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |