3303488

Information

• Patent Grant
• 3303488

• References
• Source

• Patent Number

  3,303,488

• Date Filed

  Not available

• Date Issued

  Tuesday, February 7, 1967
  57 years ago

• CPC

  • G02F1/176 - using acid- based indicators

• US Classifications

  • 345 - Computer graphics processing and selective visual display systems
  • 324 - Electricity: measuring and testing
  • 359 - Optical: systems and elements