1389211

Information

• Patent Grant
• 1389211

• References
• Source

• Patent Number

  1,389,211

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1921
  103 years ago

• CPC

  • E06B3/7003 - consisting of several adjacent similar elements
  • E06B3/822 - with an internal foursided frame
  • E06B2003/7057 - with little passing through doors
  • E06B2003/7063 - reinforced; in combination with other materials
  • E06B2003/7071 - made of a plurality of separate blocks or strips

• US Classifications

  • 052 - Static structures