1291904

Information

• Patent Grant
• 1291904

• References
• Source

• Patent Number

  1,291,904

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1919
  106 years ago

• CPC

  • E04F11/022 - characterised by the supporting structure
  • E04F2011/0214 - cast in-situ

• US Classifications

  • 052 - Static structures