×

Intelligence testing apparatus

  • US 2,870,549 A
  • Filed: 09/13/1954
  • Issued: 01/27/1959
  • Est. Priority Date: 09/13/1954
  • Status: Expired due to Term
First Claim
Patent Images

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×