US2961844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system with reheating means
Assignee: Carrier Corp
•
Filing: 1957-05-02
•
Granted: 1960-11-29
•
Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 William L Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:05
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1405; F24F3/153; F25; F25B; F25B2400/00; F25B2400/04; F25B2400/0403; F25B5/00; F25B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1886607A
Cited
US2195781A
Cited
US2451385A
Cited
US2608831A
Cited
US2679142A
Cited
US2788639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |