3425331

Information

• Patent Grant
• 3425331

• References
• Source

• Patent Number

  3,425,331

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1969
  56 years ago

• CPC

  • G03B9/20 - each moving in a single direction first to open and then to reclose

• US Classifications

  • 396 - Photography