3473575

Information

• Patent Grant
• 3473575

• References
• Source

• Patent Number

  3,473,575

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1969
  55 years ago

• CPC

  • F16L59/125 - Helical spacers
  • F16L59/143 - Pre-insulated pipes

• US Classifications

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