(57)< Abstract > < Topic >As strange feeling when wearing is lightened, the floor rub happeningThe filter difficult stomach the business antinode band is offered. SolutionsIn center section of belly pad 11 stomach tube 20The Interpolation to provide the Interpolation through-hole 12 in order to...
An improved valve system for creating reverse pulses of air through the filter element of a vacuum cleaner in order to shake and drive collected dust from the filter element during operation of the vacuum cleaner, by equipping the vacuum... J Osborn - US 被引量: 57发表: 1982年 Flexible le...