3912218

Information

• Patent Grant
• 3912218

• References
• Source

• Patent Number

  3,912,218

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • E04F11/1804 - Details of anchoring to the wall
  • B28B7/0044 - the sidewalls of the mould being only tilted away from the sidewalls of the moulded article
  • B28B7/225 - for making stairs or stair units comprising more than one step
  • B28B23/005 - with anchoring or fastening elements for the shaped articles
  • E04G13/06 - for stairs, steps, cornices, balconies, or other parts corbelled out of the wall

• US Classifications

  • 249 - Static molds