3437997

Information

• Patent Grant
• 3437997

• References
• Source

• Patent Number

  3,437,997

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1969
  55 years ago

• CPC

  • G08C19/14 - using combination of fixed frequencies
  • B66C13/40 - Applications of devices for transmitting control pulses Applications of remote control devices
  • B66C2700/088 - Remote control of electric cranes

• US Classifications

  • 340 - Communications: electrical
  • 367 - Communications, electrical: acoustic wave systems and devices