US3066497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible refrigeration system
Assignee: General Electric Co
•
Filing: 1961-06-21
•
Granted: 1962-12-04
•
Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Charles A Dubberley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:00
CPC Classifications
F; F25; F25B; F25B13/00; F25B2400/00; F25B2400/19; F25B2500/00; F25B2500/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1802659A
Cited
US1703311A
Cited
US1634813A
Cited
US2007288A
Cited
US2006712A
Cited
US2694296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |