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Publication numberUSD253909 S
Publication typeGrant
Application numberUS 05/813,909
Publication dateJan 8, 1980
Filing dateJul 8, 1977
Publication number05813909, 813909, US D253909 S, US D253909S, US-S-D253909, USD253909 S, USD253909S
InventorsJohn T. Armbruster
Original AssigneeAmerican Optical Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Refractometer
US D253909 S
Abstract  available in
Images(2)
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Claims(1)
  1. The ornamental design for a refractometer, as shown and described.
Description

FIG. 1 is a right side elevation of a refractometer, showing my new design;

FIG. 2 is a left side elevation thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof; and

FIG. 5 is a top plan view thereof.

Classifications
U.S. ClassificationD24/172