3507228

Information

• Patent Grant
• 3507228

• References
• Source

• Patent Number

  3,507,228

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1970
  55 years ago

• CPC

  • A47B57/36 - consisting of side walls of the ladder type

• US Classifications

  • 108 - Horizontally supported planar surfaces