3567172

Information

• Patent Grant
• 3567172

• References
• Source

• Patent Number

  3,567,172

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1971
  53 years ago

• CPC

  • B28B7/225 - for making stairs or stair units comprising more than one step

• US Classifications

  • 249 - Static molds
  • 052 - Static structures
  • 425 - Plastic article or earthenware shaping or treating: apparatus