1670798

Information

• Patent Grant
• 1670798

• References
• Source

• Patent Number

  1,670,798

• Date Filed

  Not available

• Date Issued

  Tuesday, May 22, 1928
  96 years ago

• CPC

  • E04F11/1045 - composed of several layers
  • E04F11/116 - of stone, concrete or like material or with an upper layer of stone or stone like material
  • E04F11/17 - Surfaces

• US Classifications

  • 052 - Static structures