3021601

Information

• Patent Grant
• 3021601

• References
• Source

• Patent Number

  3,021,601

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1962
  63 years ago

• CPC

  • E01B35/08 - for levelling

• US Classifications

  • 033 - Geometrical instruments
  • 248 - Supports