US3714980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air control system
Assignee: Vertiv Corp
•
Filing: 1970-03-16
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Granted: 1973-02-06
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Expires: 1990-03-16
Abstract
Abstract THIS INVENTION RELATES TO TEMPERATURE AND/OR HUMIDITY ELECTRICAL-ELECTRONIC CONTROLS TO MAINTAIN AN ENCLOSURE AT A CONSTANT TEMPERATURE AND HUMIDITY. SPECIFICALLY, THE ELECTRICAL/ELECTRONIC CONTROLS PROVIDE A STEP FUNCTION TO ACTUATE ONE OR MORE TEMPERATURE AND/OR HUMIDITY CONDITIONERS IN RESPONSE TO THE DEGREE OF CHANGE.
Inventors
- 👤 F Lancia
- 👤 R Liebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:07
CPC Classifications
G; G05; G05D; G05D22/00; G05D22/02; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/20; G05D23/24; Y; Y10; Y10S; Y10S165/00; Y10S165/001
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |