Index of trademarks:   Issued from the United States patent office 1967 
/ United States Government Printing Office 
 - Washington:   United States Government Printing Office,   1968 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Index 
<br/><br/><label>Universal Decimal Class. No.: </label>608.6(083.86)(73)