US2471796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pump for aquarium aerators
Assignee: Individual
•
Filing: 1945-10-01
•
Granted: 1949-05-31
•
Expires: 1965-10-01
Abstract
No abstract record available.
Inventors
- 👤 George A Thiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/16; A; A01; A01K; A01K63/00; A01K63/04; A01K63/042; F04B39/0027; F04B39/005; F04B45/00; F04B45/04; F04B45/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1767320A
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US1857675A
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US2061869A
Cited
US2054097A
Cited
US2060063A
Cited
US1976098A
Cited
US2063728A
Cited
US1992491A
Cited
US2109718A
Cited
US2186564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |