3847521

Information

• Patent Grant
• 3847521

• References
• Source

• Patent Number

  3,847,521

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • E04G11/02 - for rooms as a whole by which walls and floors are cast simultaneously , whole storeys, or whole buildings
  • E04B1/162 - with a central core, used as form, in order to form a continuous concrete shell

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 249 - Static molds