1671325

Information

• Patent Grant
• 1671325

• References
• Source

• Patent Number

  1,671,325

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1928
  96 years ago

• CPC

  • B28B1/008 - made from two or more materials having different characteristics or properties
  • B28B1/04 - by tamping or ramming
  • Y10S425/111 - Hollow block

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus