US2819844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and relative humidity controller device for air conditioning apparatus
Assignee: Individual
•
Filing: 1956-04-26
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Granted: 1958-01-14
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Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Dennick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:17
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/50; F24F11/70; F24F11/80; F24F11/86; F24F11/88; F24F2110/00; F24F2110/10; F24F2110/20; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |