1930

Information

• Patent Grant
• 1930

• References
• Source

• Patent Number

  1,930

• Date Filed

  Not available

• Date Issued

  Saturday, January 9, 1841
  185 years ago

• CPC

  • F04B19/10 - of wheel type

• US Classifications

  • 415 - Rotary kinetic fluid motors or pumps
  • 356 - Optics: measuring and testing