End coupler for fume exhaust ducts

Details End coupler for fume exhaust ducts End coupler for fume exhaust ducts

1995-06-07

1996-11-12

Lucas, Susan J.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D23262

Patent

active

D03755584

REFERENCES:
patent: 25709 (1896-06-01), Pratt
patent: D221942 (1971-09-01), Halling
patent: D267505 (1983-01-01), Ryan
patent: D360020 (1995-07-01), Sonden et al.
patent: 556127 (1896-03-01), Abrahams
patent: 1027694 (1912-05-01), Corbett
patent: 3094337 (1963-06-01), Pippert et al.

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