US3460353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner
Assignee: Hitachi Ltd
•
Filing: 1967-11-07
•
Granted: 1969-08-12
•
Expires: 1987-11-07
Abstract
No abstract record available.
Inventors
- 👤 Kyoichi Ogata
- 👤 Hiroyuki Ogawa
- 👤 Akio Sakazume
- 👤 Fukuichi Odagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:49
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; F24F1/00; F24F1/02; F24F1/022; F24F1/027; F24F3/1405; F25; F25B; F25B13/00; F25B2313/00; F25B2313/023; F25B2313/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |