Rotary valve shaft

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

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D02899159

REFERENCES:
patent: D240625 (1976-07-01), Anderson et al.
patent: D253716 (1979-12-01), Spitz
patent: D256947 (1980-09-01), Terrazas
patent: 2766962 (1956-10-01), Fodor et al.
patent: 3174212 (1965-03-01), Seltsam
patent: 3542336 (1970-11-01), Giese
patent: 3971402 (1976-07-01), Gallo
patent: 4206778 (1980-06-01), Gallo
patent: 4270732 (1981-06-01), Redman
patent: 4275868 (1981-06-01), Crone
patent: 4577656 (1986-03-01), Beltran

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