1704577

Information

• Patent Grant
• 1704577

• References
• Source

• Patent Number

  1,704,577

• Date Filed

  Not available

• Date Issued

  Tuesday, March 5, 1929
  96 years ago

• CPC

  • E21D1/14 - Freezing apparatus
  • E02D3/115 - by freezing

• US Classifications

  • 405 - Hydraulic and earth engineering