1989793

Information

• Patent Grant
• 1989793

• References
• Source

• Patent Number

  1,989,793

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1935
  90 years ago

• CPC

  • B41L9/10 - with rotary cylinders carrying sheets of hectographic gelatin-paper

• US Classifications

  • 101 - Printing