发明授权
US3905399A Liquid-conveying hose 失效
液体输送软管

Liquid-conveying hose
摘要:
A liquid-conveying hose having reinforcing bands of cord reinforcing material extending around the hose body at an angle to the axis of the hose body, the angle being lower at one end of the hose than the other to cause the hose to have variable flexibility along its length.
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