3566172

Information

• Patent Grant
• 3566172

• References
• Source

• Patent Number

  3,566,172

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1971
  54 years ago

• CPC

  • F15C1/007 - for indicating devices for fluid signals
  • G09F9/40 - in which the desired character is selected from a number of characters arranged one beside the other

• US Classifications

  • 340 - Communications: electrical
  • 359 - Optical: systems and elements
  • 385 - Optical waveguides