1920640

Information

• Patent Grant
• 1920640

• References
• Source

• Patent Number

  1,920,640

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1933
  92 years ago

• CPC

  • B41L1/02 - Devices for preparatory operations
  • B41J15/18 - Multiple web-feeding apparatus
  • B41J17/22 - Supply arrangements for webs of impression-transfer material

• US Classifications

  • 400 - Typewriting machines
  • 462 - Books, strips, and leaves for manifolding