Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1999-03-29
2000-04-04
Lichtenstein, Lisa
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
2304
Patent
active
D04223519
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patent: 4836753 (1989-06-01), Berfield et al.
patent: 4880364 (1989-11-01), Berfield et al.
patent: 5144716 (1992-09-01), Watanabe et al.
patent: 5606769 (1997-03-01), Tomasiak et al.
Lichtenstein Lisa
Shop Vac Corporation
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