Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-08-27
1987-02-10
Bullock, B. J.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02882272
REFERENCES:
patent: D211724 (1968-07-01), Schneider, Jr.
patent: D216691 (1970-05-01), Bates et al.
patent: D220958 (1971-06-01), Marsh
patent: D249275 (1978-09-01), Mackay et al.
patent: D251675 (1979-04-01), Kratz
patent: 4151092 (1979-04-01), Grimm
Bullock B. J.
Heldor Industries, Inc.
Vinson Brian N.
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