1636640

Information

• Patent Grant
• 1636640

• References
• Source

• Patent Number

  1,636,640

• Date Filed

  Not available

• Date Issued

  Tuesday, July 19, 1927
  97 years ago

• CPC

  • A47C23/155 - with combinations of flat springs or link chains with wound spring

• US Classifications

  • 245 - Wire fabrics and structure