1946989

Information

• Patent Grant
• 1946989

• References
• Source

• Patent Number

  1,946,989

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1934
  90 years ago

• CPC

  • B25D9/22 - involving a rotary-type slide valve

• US Classifications

  • 091 - Motors: expansible chamber type