US2464766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: ROBERT H HENLEY
•
Filing: 1946-01-12
•
Granted: 1949-03-15
•
Expires: 1966-01-12
Abstract
No abstract record available.
Inventors
- 👤 Neal A Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:16
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F6/00; F24F6/02; F24F6/06; F24F2203/00; F24F2203/10; F24F2203/1004; F24F2203/1012; F24F2203/1032; F24F2203/104; F24F2203/1072; F24F2203/108; F24F2203/1084; F24F2203/1088; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE148763C
Cited
GB134256A
Cited
FR548400A
Cited
US1510340A
Cited
US1762320A
Cited
US2083436A
Cited
GB387517A
Cited
US2075036A
Cited
US2361692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |