3472138

Information

• Patent Grant
• 3472138

• References
• Source

• Patent Number

  3,472,138

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1969
  55 years ago

• CPC

  • G03B27/303 - Gas processing
  • G03B17/52 - of the Land type

• US Classifications

  • 396 - Photography