1776590

Information

• Patent Grant
• 1776590

• References
• Source

• Patent Number

  1,776,590

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1930
  94 years ago

• CPC

  • D21H23/72 - Plural serial stages only
  • D21H5/0052 - Plural serial stages
  • D21H17/61 - Bitumen

• US Classifications

  • 427 - Coating processes