2154502

Information

• Patent Grant
• 2154502

• References
• Source

• Patent Number

  2,154,502

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1939
  85 years ago

• CPC

  • H01B5/06 - Single tubes
  • Y10T29/185 - by use of reciprocating perforator

• US Classifications

  • 174 - Electricity: conductors and insulators
  • 029 - Metal working
  • 138 - Pipes and tubular conduits