2803139

Information

• Patent Grant
• 2803139

• References
• Source

• Patent Number

  2,803,139

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1957
  67 years ago

• CPC

  • H03J1/10 - Rope drive Chain drive
  • Y10S116/31 - TV channel selector

• US Classifications

  • 074 - Machine element or mechanism
  • 116 - Signals and indicators