3490393

Information

• Patent Grant
• 3490393

• References
• Source

• Patent Number

  3,490,393

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1970
  55 years ago

• CPC

  • A47B57/36 - consisting of side walls of the ladder type
  • A47B57/14 - with hooks on the shelves to engage the rungs of the ladder

• US Classifications

  • 108 - Horizontally supported planar surfaces
  • 182 - Fire escape, ladder, or scaffold
  • 248 - Supports