US2899180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-velocity air-conditioning
Assignee: —
•
Filing: 1954-11-22
•
Granted: 1959-08-11
•
Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/02; F24F1/00; F24F1/01; F24F13/00; F24F13/26; F24F3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2072166A
Cited
US1990895A
Cited
US1949735A
Cited
US2159276A
Cited
US2363945A
Cited
US2290985A
Cited
US2787946A
Cited
US2705595A
Cited
US2729429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |