1994198

Information

• Patent Grant
• 1994198

• References
• Source

• Patent Number

  1,994,198

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1935
  89 years ago

• CPC

  • D21C7/10 - Heating devices
  • Y10S165/413 - for directing flow along the length of tube

• US Classifications

  • 165 - Heat exchange