3811771

Information

• Patent Grant
• 3811771

• References
• Source

• Patent Number

  3,811,771

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • G03D7/00 - Gas processing apparatus
  • G03B27/303 - Gas processing

• US Classifications

  • 355 - Photocopying
  • 396 - Photography