US2469142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning
Assignee: Servel Inc
•
Filing: 1945-12-22
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Granted: 1949-05-03
•
Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Sven W E Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:03
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; F24F5/00; F25; F25B; F25B15/00; F25B15/02; F25B15/06; F25B29/00; F25B29/006; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
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) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |