1918551

Information

• Patent Grant
• 1918551

• References
• Source

• Patent Number

  1,918,551

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1933
  91 years ago

• CPC

  • G10K1/32 - Sounding members Clappers or other strikers

• US Classifications

  • 116 - Signals and indicators