2000766

Information

• Patent Grant
• 2000766

• References
• Source

• Patent Number

  2,000,766

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1935
  89 years ago

• CPC

  • B44B1/04 - having devices for changing

• US Classifications

  • 033 - Geometrical instruments
  • 101 - Printing