Patent US4697845A successfully refreshed from Google Patents.
Patent US2779171A successfully refreshed from Google Patents.
US2779171A
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US
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Room temperature conditioner
Assignee: RCA Corp
•
Filing: 1954-01-04
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Granted: 1957-01-29
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Expires: 1974-01-04
Abstract
No abstract record available.
Inventors
- 👤 Nils E Lindenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:59
CPC Classifications
F; F25; F25B; F25B13/00; F24; F24F; F24F1/00; F24F1/02; F24F1/04; F25D; F25D17/00; F25D17/02; F25B2400/00; F25B2400/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1988549A
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US1896953A
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US1969187A
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US1891713A
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US2075225A
Cited
US2296725A
Cited
US2518299A
Cited
US2493378A
Cited
US2504308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |