2256515

Information

• Patent Grant
• 2256515

• References
• Source

• Patent Number

  2,256,515

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1941
  83 years ago

• CPC

  • B41F9/066 - Enclosures

• US Classifications

  • 101 - Printing
  • 454 - Ventilation