Patent US2555528A successfully refreshed from Google Patents.
US2555528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioning system
Assignee: —
•
Filing: —
•
Granted: 1951-06-05
•
Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1417; F24F2003/144; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1673374A
Cited
US2017027A
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US2214880A
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US2019291A
Cited
US2199967A
Cited
US2207714A
Cited
US2292486A
Cited
US2273108A
Cited
US2192126A
Cited
US2177068A
Cited
US2286618A
Cited
US2276970A
Cited
US2406375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |