US3470945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Individual
•
Filing: 1967-08-24
•
Granted: 1969-10-07
•
Expires: 1987-08-24
Abstract
No abstract record available.
Inventors
- 👤 Friedrich H Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:04
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/26; F24F1/00; F24F1/01; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/80; F24F11/81; F24F13/02; F24F13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3232342A
Cited
US3323584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |