1851514

Information

• Patent Grant
• 1851514

• References
• Source

• Patent Number

  1,851,514

• Date Filed

  Not available

• Date Issued

  Tuesday, March 29, 1932
  92 years ago

• CPC

  • H03J5/26 - operated by hand

• US Classifications

  • 455 - Telecommunications
  • 361 - Electricity: electrical systems and devices