2523158

Information

• Patent Grant
• 2523158

• References
• Source

• Patent Number

  2,523,158

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1950
  74 years ago

• CPC

  • G10K3/00 - Rattles or like noise-producing devices
  • Y10S116/12 - Door knockers

• US Classifications

  • 116 - Signals and indicators