US2793509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for cooling inhabitable and other enclosures
Assignee: Individual
•
Filing: 1955-10-14
•
Granted: 1957-05-28
•
Expires: 1975-10-14
Abstract
No abstract record available.
Inventors
- 👤 Victor I Keen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:40
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0046; F24F13/00; F24F13/02; F24F5/005; F28; F28D; F28D20/00; F28D20/0052; F28D5/00; Y; Y02; Y02B; Y02B10/00; Y02B10/40; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |