1382404

Information

• Patent Grant
• 1382404

• References
• Source

• Patent Number

  1,382,404

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1921
  103 years ago

• CPC

  • A47B39/10 - Devices for holding pupils upright

• US Classifications

  • 297 - Chairs and seats
  • 108 - Horizontally supported planar surfaces