2809785

Information

• Patent Grant
• 2809785

• References
• Source

• Patent Number

  2,809,785

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1957
  67 years ago

• CPC

  • H01H43/08 - comprising an interchangeable programme part which is common for all programme steps

• US Classifications

  • 250 - Radiant energy
  • 178 - Telegraphy