US2913883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooling system
Assignee: Individual
•
Filing: 1956-01-03
•
Granted: 1959-11-24
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/02; F25D31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR442791A
Cited
US1708253A
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US1756992A
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US2065358A
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US2507632A
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US2634590A
Cited
US2634592A
Cited
US2640328A
Cited
US2748576A
Cited
US2787141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |