3494272

Information

• Patent Grant
• 3494272

• References
• Source

• Patent Number

  3,494,272

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  55 years ago

• CPC

  • G03B9/28 - Roller blind or flexible plate
  • G03B9/08 - Shutters

• US Classifications

  • 396 - Photography