1773917

Information

• Patent Grant
• 1773917

• References
• Source

• Patent Number

  1,773,917

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1930
  93 years ago

• CPC

  • E04H6/40 - characterised by use of turntables or rotary rings

• US Classifications

  • 104 - Railways