2025151

Information

• Patent Grant
• 2025151

• References
• Source

• Patent Number

  2,025,151

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1935
  89 years ago

• CPC

  • G09F19/04 - operated by the opening or closing of doors

• US Classifications

  • 116 - Signals and indicators