640534

Information

• Patent Grant
• 640534

• References
• Source

• Patent Number

  640,534

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1900
  125 years ago

• CPC

  • A61F7/02 - Compresses or poultices for effecting heating or cooling
  • Y10S165/044 - having flexible heat exchange surface conforming to a solid structure

• US Classifications

  • 165 - Heat exchange
  • 005 - Beds
  • 219 - Electric heating
  • 607 - Surgery: light, thermal, and electrical application
  • D24 - Medical and laboratory equipment