Show Lock That Keeps Records A recording lock that that not not only tells the time It was opened but ut the key that did It has been Leen Invented says Popular Mechanics Magazine It can be used In connection with any standard standard stand stand- ard make of door fitting It prints on a n tIn tiny paper r roll roU like that In a cash register what time It was opened It t has facilities for as man many manyas y yas as six sL keys each ench making Its own proof forgery-proof Imprint on the roll roUe |