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Publication numberUSD232635 S
Publication typeGrant
Publication dateSep 3, 1974
Filing dateSep 7, 1973
Publication numberUS D232635 S, US D232635S, US-S-D232635, USD232635 S, USD232635S
InventorsElio Mauri
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Check valve for a fractionating tray
US D232635 S
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 0 "ice Patented Sept. 3, 1974 CHECK VALVE FOR A FRACTIONATING TRAY Elio Maui-i, Milan. Italy, assignor to Koch Engineering Company, Inc., Wichita, Kans- Filed Sept. 7, 1973, Ser. No. 394,991

Term of patent 14 years Int. Cl. D230]; D24-99 US. Cl. D23-22 FIG. 1 is a perspective view of my check valve for a fraetionating tray.

FIG. 2 is a top view of my check valve for a fractionating tray.

FIG. 3 is a bottom view of my check valve for a fractionating tray.

FIG. 4 i a side elevation view of my check valve for a fraetionating tray.

FIG. 5 is an end elevation view of my check valve for a fractionating tray.

I claim:

The ornamental design for the check valve for a fractionating tray, as shown.

References Cited UNITED STATES PATENTS D. 138,183 7/1944 Pool D2322 2,772,080 11/1956 Huggins et a1. 261-1 14 2,819,050 1/1958 Huggins et a1 2611 14 3,427,007 2/1969 Braun 261-1 14 3,693,948 9/1972 Kloss 261114 BERNARD ANSHER, Primary Examiner Des. 232,635

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