US3758368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic air conditioning system
Assignee: MECHANIWATT CORP
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Filing: 1971-10-04
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Granted: 1973-09-11
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Expires: 1991-10-04
Abstract
Abstract An air conditioning system wherein the functions of heating, cooling, humidifying, dehumidifying, ventilation, and natural cooling are automatically controlled during all types of weather by standard control instruments including an indoor 4-stage thermostat, an outdoor thermostat, and two humidistats, programmed in coordinated functional sequence through electrical control circuits and relays.
Inventors
- 👤 A Trask
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:53
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/88; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/275; F24F11/0001; F24F2011/0002; F24F2110/00; F24F2110/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |