Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-10-26
1987-03-31
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02890780
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Vassallo Industries catalog entitled "Gasketed Sewer Main Fittings".
Vassallo Industries catalog entitled "PVC Sewer Main Fittings", revised Nov. 1, 1978, cover page and next to last page.
Vassallo Industries catalog entitled "P.V.C. Sewer Fittings Gasketed, List Prices" effective Jun. 1980, front cover.
Vassallo Industries publication entitled "The Ultimate Gasket System", pp. 2 & 3.
Vassallo Industries publication entitled "List Prices P.V.C. Sewer Fittings Gasketed", effective Sep. 1980, p. 2.
Valls Jose E.
Vassallo Efrain D.
Largen James R.
Vassallo Research and Development Corporation
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