Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1997-09-23
1998-08-18
Licthenstein, Lisa
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23387, 2304
Patent
active
D03972020
REFERENCES:
patent: 1066329 (1913-07-01), Schwedler
A delta Manufacturing Co. Inc. Cat., p. 14, #913 Y-Branch Furnace Pipe Fitting, lower middle side of page.
Licthenstein Lisa
Pearson Loren D.
Schwartz Robert M.
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