| 摘要 |
FIELD: medicine. SUBSTANCE: lower cover is made for mounting on housing either with blind side or with open side downwards. For this purpose it has additional fastener at blind side. Housing can also be made with blind bottom. Device has return spring made in form of flexible plate. One end of spring is rigidly connected to upper part of housing, and free end of spring engages with projection or end face of pan. EFFECT: increased storage period, provision of quick action of device. 8 cl, 13 dwg
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