741647

Information

• Patent Grant
• 741647

• References
• Source

• Patent Number

  741,647

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1903
  121 years ago

• CPC

  • G04B9/025 - Acoustical or electrical indicating means
  • G04B9/005 - by optical indication of the amount of winding

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 116 - Signals and indicators
  • 968 - Horology