2121798

Information

• Patent Grant
• 2121798

• References
• Source

• Patent Number

  2,121,798

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1938
  86 years ago

• CPC

  • B61L19/14 - with electrical locks

• US Classifications

  • 246 - Railway switches and signals
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets