2023661

Information

• Patent Grant
• 2023661

• References
• Source

• Patent Number

  2,023,661

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1935
  88 years ago

• CPC

  • E06B5/16 - Fireproof doors or similar closures Adaptations of fixed constructions therefor
  • E06B3/728 - of sheet metal
  • E06B3/9604 - Welded or soldered joints
  • E06B2003/7051 - of layered construction involving different materials
  • E06B2003/7069 - with cladding

• US Classifications

  • 052 - Static structures