US2274615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Honeywell Inc
•
Filing: 1939-08-05
•
Granted: 1942-02-24
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Expires: 1959-08-05
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:28
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/028; F25B13/00; F25B41/00; F25B41/40; F25B41/42; F25B41/45; F25B2313/00; F25B2313/027; F25B2313/02732
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-02-23 | 1945-08-25 | 1946-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-23 | 1949-08-25 | 1950-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-23 | 1953-08-25 | 1954-02-24 | $7700.00 | Window Closed / Lapsed |