2171746

Information

• Patent Grant
• 2171746

• References
• Source

• Patent Number

  2,171,746

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1939
  85 years ago

• CPC

  • E04D1/06 - of metal

• US Classifications

  • 052 - Static structures
  • D25 - Building units and construction elements