Laboratory glassware; jacketed Soxhlet extractors with standard ground joints
实验室玻璃器皿；带标准接地接头的夹套索氏提取器

1977-05-01

Laboratory glassware; connections with standard ground joints
实验室玻璃器皿；与标准接地接头的连接

1977-05-01

Laboratory glassware; Graham condenser with standard ground joints
实验室玻璃器皿；带标准接地接头的格雷厄姆冷凝器

1976-03-01

Laboratory glassware; Dimroth condenser with standard ground joints
实验室玻璃器皿；带标准接地接头的Dimroth冷凝器

1976-03-01

Laboratory glassware; Allihn condensers with standard ground joints
实验室玻璃器皿；带标准接地接头的Allinn冷凝器

1976-03-01

Laboratory glassware; jacketed coil condenser with standard ground joints
实验室玻璃器皿；带标准接地接头的夹套线圈冷凝器

1976-03-01