United States Patent 3441249
Inventors:
Aslan, Wilfred
Publication Date:
04/29/1969
Assignee:
ALKON PRODUCTS CORP
Other Classes:
137/599.050, 251/214, 137/601.180, 137/556, 251/122, 137/601.150
International Classes:
F16K47/10; F16K47/00; F16K15/18; F16K37/00