Air purifier

Details Air purifier Air purifier

1980-07-24

1982-11-30

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02671140

REFERENCES:
patent: D201932 (1965-08-01), Talge et al.
patent: D227669 (1973-07-01), Mann
patent: D234597 (1975-03-01), Diachuk
patent: D248869 (1978-08-01), Risher
patent: D258759 (1981-03-01), Johnson
patent: 3861894 (1975-01-01), Marsh
patent: 3928008 (1975-12-01), Petersen
patent: 4252547 (1981-02-01), Johnson
patent: 4272261 (1981-06-01), Lynch, Jr. et al.

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