3689735

Information

• Patent Grant
• 3689735

• References
• Source

• Patent Number

  3,689,735

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • B29C63/38 - by liberation of internal stresses
  • A43B3/163 - Overshoes specially adapted for health or hygienic purposes
  • B29C35/08 - by wave energy or particle radiation
  • B29C63/0065 - Heat treatment
  • B29C2035/0822 - using IR radiation

• US Classifications

  • 219 - Electric heating
  • 392 - Electric resistance heating devices