1557759

Information

• Patent Grant
• 1557759

• References
• Source

• Patent Number

  1,557,759

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1925
  99 years ago

• CPC

  • E04B5/18 - with stiffening ribs or other beam-like formations wholly cast between filling members

• US Classifications

  • 052 - Static structures