2221790

Information

• Patent Grant
• 2221790

• References
• Source

• Patent Number

  2,221,790

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1940
  84 years ago

• CPC

  • F01L31/16 - the drive being effected by specific means other than eccentric

• US Classifications

  • 417 - Pumps
  • 091 - Motors: expansible chamber type