Patent
   D387176
Priority
Jan 19 1994
Filed
Oct 23 1995
Issued
Dec 02 1997
Expiry
Dec 02 2011
Assg.orig
Entity
unknown
6
8
n/a
The ornamental design for an evaporator flask for a rotary evaporator, as shown and described.

FIG. 1 is a top plan view of an evaporator flask for a rotary evaporator, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, with all other side elevational views being identical thereto, the broken line showing of the rotary evaporator being for illustrative purposes only and forming no part of the claimed design; and,

FIG. 4 is a perspective view of the flask.

Spring, Arthur

Patent Priority Assignee Title
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Patent Priority Assignee Title
4235677, Mar 29 1976 RAF-TAN, INC Distillation flask and apparatus for producing high-purity water having overflow liquid trap means
4678753, Aug 25 1984 BIOTEST A G , A JOINT STOCK COMPANY OF THE FEDERAL REPUBLIC OF GERMANY Blood-culture flask with integrated subculture
5156812, Aug 10 1990 Corning Incorporated Modular solvent extractor/concentrator apparatus with in-line drying adaptor
5398806, Sep 18 1992 EA ENGINEERING, SCIENCE & TECHNOLOGY, INC Apparatus for performing a plurality of distillation and reflux operations simultaneously within a compact space
D311249, Jul 31 1987 Terumo Kabushiki Kaisha Blood collecting tube
D318917, Nov 21 1988 Distillation flask
D326527, Mar 20 1989 KONTES ASSET MANAGEMENT INC Solvent storage flask
D340993, Mar 19 1991 THERMO SAVANT INC Flask
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 23 1995Buchi Labortechnik AG(assignment on the face of the patent)
Nov 30 1995SPRING, ARTHURBuchi Labortechnik AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0078720843 pdf
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