Damper

Details Damper Damper

1979-09-26

1983-03-15

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2303

Patent

active

D02682818

REFERENCES:
patent: 1669707 (1928-05-01), Haynes
patent: 2654363 (1953-10-01), Simpson
patent: 2975975 (1961-03-01), Weber
patent: 4108369 (1978-08-01), Prikkel

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