Fume ventilating work station for laboratories

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified


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patent: D149771 (1948-05-01), Pledger
patent: D214375 (1969-06-01), Knab
patent: D220324 (1971-03-01), Ott et al.
patent: D221847 (1971-09-01), Dexter
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patent: 3895570 (1975-07-01), Eagleson, Jr.
patent: 3926597 (1975-12-01), Landy
patent: 4179984 (1979-12-01), Gorcey


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