1921040

Information

• Patent Grant
• 1921040

• References
• Source

• Patent Number

  1,921,040

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  92 years ago

• CPC

  • F24D3/147 - arranged in facades

• US Classifications

  • 165 - Heat exchange
  • 052 - Static structures
  • 237 - Heating systems