3654438

Information

• Patent Grant
• 3654438

• References
• Source

• Patent Number

  3,654,438

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1972
  52 years ago

• CPC

  • G06G1/0068 - for conversion from one unit system to another

• US Classifications

  • 235 - Registers