"The technical definition for 'account receivable,' as 'an amount due a business on account from a customer who has bought merchandise or received services,' is the appropriate definition to read into RCW 4.16.040(2) [a Washington state statute governing actions on accounts receivable]."
"Tingey seeks to collect a balance owed to his legal business by a client for legal services performed on behalf of that client. . . . The six-year limitation of RCW 4.16.040(2) for '[a]n action upon an account receivable incurred in the ordinary course of business' provides the statute of limitations in this action."