3821933

Information

• Patent Grant
• 3821933

• References
• Source

• Patent Number

  3,821,933

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1974
  50 years ago

• CPC

  • E01B35/00 - Applications of measuring apparatus or devices for track-building purposes
  • E01B33/02 - for slewing
  • E01B2203/16 - Guiding or measuring means

• US Classifications

  • 104 - Railways
  • 033 - Geometrical instruments