2990649

Information

• Patent Grant
• 2990649

• References
• Source

• Patent Number

  2,990,649

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1961
  63 years ago

• CPC

  • C03B7/096 - for heating

• US Classifications

  • 065 - Glass manufacturing
  • 285 - Pipe joints or couplings