451209

Information

• Patent Grant
• 451209

• References
• Source

• Patent Number

  451,209

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1891
  133 years ago

• CPC

  • F04B39/045 - Labyrinth-sealing between piston and cylinder

• US Classifications

  • 092 - Expansible chamber devices