US2940281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus with provision for selective reheating
Assignee: Westinghouse Electric Corp
•
Filing: 1958-11-25
•
Granted: 1960-06-14
•
Expires: 1978-11-25
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:03
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; F24F1/00; F24F1/02; F24F1/03; F24F1/031; F24F1/032; F24F1/0323; F24F1/0358
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172877A
Cited
US2844946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |