US2778620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water aerating devices
Assignee: Individual
•
Filing: 1953-09-30
•
Granted: 1957-01-22
•
Expires: 1973-09-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Goodrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:15
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2316832A
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US2134182A
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US2120620A
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US2210844A
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US2510395A
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US2510396A
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US2633343A
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US2565554A
Cited
US2643104A
Cited
US2657024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |