2750647

Information

• Patent Grant
• 2750647

• References
• Source

• Patent Number

  2,750,647

• Date Filed

  Not available

• Date Issued

  Tuesday, June 19, 1956
  69 years ago

• CPC

  • E04G11/18 - for double walls
  • E04B2/86 - made in permanent forms
  • E04B2002/8682 - Mixed technique using permanent and reusable forms

• US Classifications

  • 249 - Static molds
  • 052 - Static structures