2531636

Information

• Patent Grant
• 2531636

• References
• Source

• Patent Number

  2,531,636

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1950
  74 years ago

• CPC

  • B43L13/143 - mounted on parallel-motion drawing appliances

• US Classifications

  • 033 - Geometrical instruments