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.

Referenced Cited
U.S. Patent Documents
D23176 April 1894 Tatum
D157332 February 1950 Bolard
2801017 July 1957 Cortat
Foreign Patent Documents
9792 1891 GBX
Patent History
Patent number: D280080
Type: Grant
Filed: Jul 19, 1982
Date of Patent: Aug 13, 1985
Inventor: Robert J. Miskinis (Santee, CA)
Primary Examiner: Catherine E. Kemper
Attorney: George J. Rubens
Application Number: 6/399,364
Current U.S. Class: D/9439; D/9440; D24/29