3448974

Information

• Patent Grant
• 3448974

• References
• Source

• Patent Number

  3,448,974

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1969
  55 years ago

• CPC

  • F27D1/1621 - Making linings by using shaped elements
  • F27D1/025 - Roofs supported around their periphery

• US Classifications

  • 266 - Metallurgical apparatus
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 432 - Heating