Patent US2952994A successfully refreshed from Google Patents.
US2952994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
air conditioner element arrangement
Assignee: —
•
Filing: —
•
Granted: 1960-09-20
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/22; F24F13/222; F24F1/00; F24F1/02; F24F1/022; F24F1/027; F24F13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2736176A
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US1984054A
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US2324313A
Cited
US2728197A
Cited
US2739451A
Cited
US2744389A
Cited
US2726518A
Cited
US2730873A
Cited
US2810273A
Cited
US2737787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |