2146957

Information

• Patent Grant
• 2146957

• References
• Source

• Patent Number

  2,146,957

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1939
  85 years ago

• CPC

  • B28B11/089 - Using impacting tools
  • B28B11/0818 - for roughening, profiling, corrugating
  • B28D1/181 - using cutters loosely mounted on a turning tool support

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus