1420478

Information

• Patent Grant
• 1420478

• References
• Source

• Patent Number

  1,420,478

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1922
  102 years ago

• CPC

  • E04B1/4185 - for cavity walls with both wall leaves made of masonry
  • E04B2/30 - using elements having specially designed means for stabilising the position Spacers for cavity walls
  • E04B2/34 - by filling material with or without reinforcements in small channels in, or in grooves between, the elements
  • E04B2002/025 - U-shaped

• US Classifications

  • 052 - Static structures