1334871

Information

• Patent Grant
• 1334871

• References
• Source

• Patent Number

  1,334,871

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1920
  104 years ago

• CPC

  • E01D4/00 - Arch-type bridges
  • E01D2101/22 - Masonry Bricks
  • E01D2101/24 - Concrete

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 033 - Geometrical instruments
  • 052 - Static structures