3621635

Information

• Patent Grant
• 3621635

• References
• Source

• Patent Number

  3,621,635

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • E04F13/0851 - Hooking means on the back side of the covering elements
  • E04F13/083 - Hooking means on the back side of the covering elements
  • E04F13/144 - with an outer layer of marble or other natural stone
  • Y10T29/49888 - Subsequently coating
  • Y10T29/49943 - Riveting

• US Classifications

  • 052 - Static structures
  • 029 - Metal working