1697921

Information

• Patent Grant
• 1697921

• References
• Source

• Patent Number

  1,697,921

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1929
  96 years ago

• CPC

  • B25H1/0007 - for engines, motor-vehicles or bicycles
  • Y10T29/53561 - Engine valve spring compressor [only]
  • Y10T29/53565 - Plural spring engagement

• US Classifications

  • 029 - Metal working