NOVEL POLYIMIDE
申请公布号:GB9000616(D0)
申请号:GB19900000616
申请日期:1990.01.11
申请公布日期:1990.03.14
分类号:B01D71/64;C07C217/90;C08G73/10
主分类号:B01D71/64
HEAT SEALABLE MULTILAYER POLYOLEFIN FILM
LUBRICATED FIN PILE-TYPE WEATHERSTRIP
NOVEL 4- Z -6- 2,4,5-CIS -2-ALKYL-4-0-HYDROXYPHENYL -1,3-DIOXAN-5-YL -HEXENOIC ACIDS
CONTINUOUS PRODUCTION OF POLYMER BEADS OF CONTROLLED SIZE
COIN SUPPORTS ADAPTED FOR RINGS, NECKLACES AND EAR-RINGS
PROCESS FOR MAKING TITANIUM DIOXIDE CONCENTRATES
SEALING MECHANISM FOR DRIVE UNIT
APPARATUS FOR AUTOMATICALLY STUFFING MEAT IN CASINGS
VALVE SYSTEM FOR CHARGING DEVICE FOR SHAFT FURNACE
Verfahren zur Herstellung von kratz- und abriebfesten Edelmetalldekoren