3677520

Information

• Patent Grant
• 3677520

• References
• Source

• Patent Number

  3,677,520

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1972
  52 years ago

• CPC

  • E21B19/02 - Rod or cable suspensions
  • B66D3/24 - Applications of limit switches

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force
  • 091 - Motors: expansible chamber type