1504976

Information

• Patent Grant
• 1504976

• References
• Source

• Patent Number

  1,504,976

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1924
  100 years ago

• CPC

  • B22C19/06 - Devices for rapping or loosening the pattern

• US Classifications

  • 091 - Motors: expansible chamber type