Patent US2631019A successfully refreshed from Google Patents.
US2631019A
Expired / Lapsed
US
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Air washer and cooler
Assignee: Individual
•
Filing: 1949-10-18
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Granted: 1953-03-10
•
Expires: 1969-10-18
Abstract
No abstract record available.
Inventors
- 👤 Yates Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:31
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US228765A
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US893452A
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US917561A
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US926198A
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US1102996A
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US1734677A
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US1756673A
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US1877296A
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US2348791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |