Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-03-06
1983-08-09
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02700824
REFERENCES:
patent: D242544 (1976-11-01), Betenbaugh, Jr.
patent: D243184 (1977-01-01), Solinski
patent: D248565 (1978-07-01), Watson
patent: 670066 (1901-03-01), Smoak
patent: 4074676 (1978-02-01), Thomas
patent: 4131231 (1978-12-01), Cleer, Jr.
"Save Oil With Aqua-Grate", Shark Manufacturing Co., undated but prior art.
Cleer Daniel L.
Cleer Mark R.
Kemper Catherine E.
Lamont Licensing Corporation
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