2042697

Information

• Patent Grant
• 2042697

• References
• Source

• Patent Number

  2,042,697

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1936
  88 years ago

• CPC

  • F41G3/28 - Small-scale apparatus
  • G09B19/00 - Teaching not covered by other main groups of this subclass

• US Classifications

  • 434 - Education and demonstration