1981481

Information

• Patent Grant
• 1981481

• References
• Source

• Patent Number

  1,981,481

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • F04B27/0409 - Pistons
  • F04B27/0657 - rotary cylinder block

• US Classifications

  • 417 - Pumps