Improved egg incubator tray comprising: several parallel rows of egg cells, said rows are placed in position to longitudinally decenter the cells in alternating rows substantially half the length of a cell from the cells of the other nearby rows; an egg cell in said alternate rows projecting substantially half the length of the cell, beyond the end cell in the other neighboring rows to define a serrated edge of said tray; said toothed edge is defined such that a second tray, egg incubator having a serrated edge inter-fits with the egg incubator tray in the end egg cells in the second egg incubator tray and the protruding egg cells extremely in said second egg incubator tray fits between the egg cells of the end of the alternate rows. (Machine-translation by Google Translate, not legally binding)
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