. . . . . "1977" . . "Liquidation; name acquired byZoom Telephonics" . . . . . "Hayes Microcomputer Products" . "this was no longer of wide interest" . . . . . . . . . "Hayes Communications" . . "Hayes Microcomputer Products" . . . "Smartmodem" . . . . . "Hayes Corporation" . . . "Hayes" . "Hayes Modem" . . . . . "Hayes Smartmodem 300" . . . . "Hayes Micromodem II" . . "Hayes Smartmodem" .