2880491

Information

• Patent Grant
• 2880491

• References
• Source

• Patent Number

  2,880,491

• Date Filed

  Not available

• Date Issued

  Tuesday, April 7, 1959
  65 years ago

• CPC

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

• US Classifications

  • 249 - Static molds