3639142

Information

• Patent Grant
• 3639142

• References
• Source

• Patent Number

  3,639,142

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  52 years ago

• CPC

  • C23C2/385 - Tubes of specific length

• US Classifications

  • 427 - Coating processes
  • 118 - Coating apparatus