3689737

Information

• Patent Grant
• 3689737

• References
• Source

• Patent Number

  3,689,737

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • H05B3/0057 - for plastic handling and treatment
  • H05B3/0061 - for metal treatment

• US Classifications

  • 392 - Electric resistance heating devices
  • 219 - Electric heating
  • D08 - Tools and hardware