1690488

Information

• Patent Grant
• 1690488

• References
• Source

• Patent Number

  1,690,488

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1928
  96 years ago

• CPC

  • B41J9/30 - Springs

• US Classifications

  • 101 - Printing
  • 235 - Registers