Patent US3542524A successfully refreshed from Google Patents.
US3542524A
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US
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Oxygen generating apparatus for aquariums and other oxygen requirement systems
Assignee: HARRY E KIMBLE
•
Filing: 1967-10-10
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Granted: 1970-11-24
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 Harry E Kimble
- 👤 Paul W Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:26
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0203; C01B13/0211; C01B13/0214; 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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US645545A
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US705570A
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US978641A
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US2245495A
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US2541838A
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US2912018A
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US3332746A
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US3168887A
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US3478460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |