3929275

Information

• Patent Grant
• 3929275

• References
• Source

• Patent Number

  3,929,275

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1975
  49 years ago

• CPC

  • B31B37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents from webs
  • B31B2237/055 - involving folding a web about an already tubular web
  • Y10S493/933 - having multilayer wall

• US Classifications

  • 383 - Flexible bags
  • 493 - Manufacturing container or tube from paper