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US5515993A Hinged semi-rigid container having wall stiffening means 失效
铰接半刚性容器具有墙壁加强装置

Hinged semi-rigid container having wall stiffening means
摘要:
A thermoplastic hinged container having stiffened side walls and having spaced channels in a shoulder/flange seal portion of the container base and mating stiffening lugs in an opposing lid portion to prevent warping of the container during closure and provide improved sealing.
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