2241538

Information

• Patent Grant
• 2241538

• References
• Source

• Patent Number

  2,241,538

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1941
  83 years ago

• CPC

  • C04B26/22 - Natural resins
  • C04B24/36 - Bituminous materials
  • D06N5/00 - Roofing materials comprising a fibrous web coated with bitumen or another polymer

• US Classifications

  • 524 - Synthetic resins or natural rubbers