Patent US2929223A successfully refreshed from Google Patents.
US2929223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning unit
Assignee: Individual
•
Filing: 1957-04-05
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Granted: 1960-03-22
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Expires: 1977-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:23
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; F24F1/00; F24F1/02; F24F1/028; F24F1/0284; F24F1/0328; F24F1/035; F24F1/04
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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |