2172697

Information

• Patent Grant
• 2172697

• References
• Source

• Patent Number

  2,172,697

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1939
  85 years ago

• CPC

  • E02B7/32 - Cylindrical or tubular gates

• US Classifications

  • 405 - Hydraulic and earth engineering