2644375

Information

• Patent Grant
• 2644375

• References
• Source

• Patent Number

  2,644,375

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1953
  71 years ago

• CPC

  • B31B41/00 - Machinery characterised by making envelopes or bags of other specific form or construction
  • B31B2241/007 - Making recording disc envelopes

• US Classifications

  • 493 - Manufacturing container or tube from paper