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The ornamental design for an ore concentrating tray, as shown. |
FIG. 1 is an enlarged isometric view of an ore concentrating tray showing my new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a side elevational view of the side opposite that shown in FIG. 2;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is an end elevational view thereof;
FIG. 7 is an end elevational view of the end opposite that shown in FIG. 6.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jun 23 1980 | Joseph W., Montigny | (assignment on the face of the patent) | / | |||
May 05 1982 | WHITE, RUSSELL W | MONTIGNY, JOSEPH W EL MONTE, | ASSIGNMENT OF ASSIGNORS INTEREST | 004022 | /0157 |
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