×

Air cleaner

  • US 2,143,421 A
  • Filed: 09/07/1937
  • Issued: 01/10/1939
  • Est. Priority Date: 09/07/1937
  • Status: Expired due to Term
First Claim
Patent Images

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