×

Spiral blower wheel

  • US 2,980,990 A
  • Filed: 01/22/1957
  • Issued: 04/25/1961
  • Est. Priority Date: 01/22/1957
  • Status: Expired due to Term
First Claim
Patent Images

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×