2180417

Information

• Patent Grant
• 2180417

• References
• Source

• Patent Number

  2,180,417

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1939
  85 years ago

• CPC

  • B41B21/16 - Optical systems
  • B41B17/08 - with a fixed carrier

• US Classifications

  • 396 - Photography