Reusable extractor-stopper for laboratory glassware
FIG. 1 is a top perspective view of a reusable extractor-stopper for laboratory glassware, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a cross sectional view thereof, taken along line 3--3 of FIG. 2;
FIG. 4 is a bottom plan view thereof.
The broken line disclosure of a portion of a flask in FIG. 3 is for illustrative purpose only and forms no part of the claimed design.