Patent US2934323A successfully refreshed from Google Patents.
US2934323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Carrier Corp
•
Filing: 1956-12-03
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Granted: 1960-04-26
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Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Edward J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:15
CPC Classifications
F; F25; F25B; F25B13/00; F24; F24F; F24F5/00; F24F5/0007; F24F5/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1991280A
Cited
GB381709A
Cited
US2196005A
Cited
US2544544A
Cited
US2672734A
Cited
US2759708A
Cited
US2806674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |