Patterson Cos. (PDCO) came out with quarterly earnings of $0.47 per share, missing the Zacks Consensus Estimate of $0.49 per share. This compares to earnings of $0.50 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of -4.08%. A quarter ago, it was expected that this medical supplies maker would post earnings of $0.32 per share when it actually produced earnings of $0.24, delivering a surprise of -25%.Over the last four quarters, ...