2297139

Information

• Patent Grant
• 2297139

• References
• Source

• Patent Number

  2,297,139

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1942
  82 years ago

• CPC

  • F16L41/025 - with rectangular cross-section

• US Classifications

  • 052 - Static structures
  • 174 - Electricity: conductors and insulators