Scented central air unit

Details Scented central air unit Scented central air unit

Filed on

1990-08-23

Date issued

1992-09-15

Examiner

Burke, Wallace R.

Patent Class

Environmental heating and cooling; fluid handling and sanitary e

SubClass

Heating or cooling

SubSubClass

Air treatment

Type

Patent

Status

active

Patent number

D03294935

Description

REFERENCES:
patent: 3711023 (1973-01-01), Smith
patent: 4028073 (1977-06-01), Swaim
patent: 4065262 (1977-12-01), Petroff
patent: 4118226 (1978-10-01), Boueassa
patent: 4306892 (1981-12-01), Atalla
patent: 4563333 (1986-01-01), Frigon
patent: 4604114 (1986-08-01), Ward
patent: 5019352 (1991-05-01), Gonzalez

Affiliated with

Also associated with

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