3878616

Information

• Patent Grant
• 3878616

• References
• Source

• Patent Number

  3,878,616

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1975
  50 years ago

• CPC

  • B43L13/22 - Adjustable curve rulers

• US Classifications

  • 033 - Geometrical instruments
  • 269 - Work holders