Damper lever

Details Damper lever Damper lever

1988-10-13

1990-07-17

Gandy, James M.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

74 96

Patent

active

D03093476

REFERENCES:
patent: 672765 (1901-04-01), Hart
patent: 2503421 (1950-04-01), Sherard
patent: 2676795 (1954-04-01), DeRoo
patent: 2837019 (1958-06-01), Godes
patent: 3522295 (1971-01-01), Armstrong
patent: 3683786 (1972-08-01), Hedrick
patent: 3738254 (1973-06-01), Root
patent: 3780640 (1973-12-01), Fruth
patent: 3938430 (1976-02-01), Koppang
patent: 4338967 (1982-07-01), McCabe
patent: 4653384 (1987-03-01), Amano

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