1297478

Information

• Patent Grant
• 1297478

• References
• Source

• Patent Number

  1,297,478

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1919
  106 years ago

• CPC

  • E21D17/01 - characterised by the shape of the cap
  • Y10T403/7129 - Laterally spaced rods

• US Classifications

  • 052 - Static structures
  • 403 - Joints and connections