Patent US2782015A successfully refreshed from Google Patents.
US2782015A
Expired / Lapsed
US
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Evaporative cooler
Assignee: Individual
•
Filing: 1955-03-07
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Granted: 1957-02-19
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Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Herald B Perrine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:14
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3202; F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1966; Y10T74/19665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219029A
Cited
US2289825A
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US2324386A
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US2300580A
Cited
US2417010A
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US2527569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |