COMPUTER MOUSE; COMPUTER PERIPHERALS, NAMELY, COMPUTER ROLLERBALL; AND COMPUTER PERIPHERALS, NAMELY, BUTTON-ACTIVATED INPUT DEVICE THAT WHEN ROLLED ALONG A FLAT SURFACE DIRECTS AN INDICATOR TO MOVE CORRESPONDINGLY ABOUT A COMPUTER SCREEN, ALLOWING THE OPERATOR TO MOVE THE INDICATOR FREELY, AS TO SELECT OPERATIONS OR MANIPULATIVE TEXT OR GRAPHICS

'activ':14 'allow':34 'along':20 'button':13 'button-activ':12 'comput':1,3,6,9,32 'correspond':29 'devic':16 'direct':24 'flat':22 'freeli':41 'graphic':50 'indic':26,40 'input':15 'manipul':47 'mous':2 'move':28,38 'name':5,11 'oper':36,45 'peripher':4,10 'roll':19 'rollerbal':7 'screen':33 'select':44 'surfac':23 'text':48

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