A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
183/99
A47L 9/12 (2006.01) A47L 9/10 (2006.01) A47L 9/20 (2006.01)
Patent
CA 1037390
ELECTRIC CLEANER ABSTRACT OF THE DISCLOSURE The disclosed filter sheet used in electric cleaners is prepared by forming a stock including essentially linter pulps mixed with chemical fibers such as rayon fibers and impregnated with phenol or melamine resin. Then the filter sheet is folded to give its cross section many continuous waves.
180321
Fukuda Kouji
Nagamine Motoru
LandOfFree
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