Patent US2720084A successfully refreshed from Google Patents.
US2720084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy storage for air conditioning systems
Assignee: Individual
•
Filing: 1953-06-09
•
Granted: 1955-10-11
•
Expires: 1973-06-09
Abstract
No abstract record available.
Inventors
- 👤 James G Hailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:15
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/208; F; F24; F24F; F24F5/00; F25; F25D; F25D16/00; Y; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1007178A
Cited
US1891713A
Cited
US2050002A
Cited
US2158792A
Cited
US2107088A
Cited
US2193838A
Cited
US2170993A
Cited
US2228834A
Cited
US2323840A
Cited
US2367305A
Cited
US2553979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |