US3827862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air curtain device incorporating ultraviolet light
Assignee: Individual
•
Filing: 1972-08-10
•
Granted: 1974-08-06
•
Expires: 1992-08-10
Abstract
Abstract An air curtain device plural blower assemblies within a housing discharging air into a plenum chamber and thereafter outwardly in a laterally elongated continuous stream. The housing has an air intake upstream of the blowers with an internal air inlet guide having an ultraviolet light source therein to treat and decontaminate air as drawn into the device.
Inventors
- 👤 S Berlant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/16; A61L9/18; A61L9/20; F; F24; F24F; F24F9/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |