2822437

Information

• Patent Grant
• 2822437

• References
• Source

• Patent Number

  2,822,437

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1958
  66 years ago

• CPC

  • B60B15/26 - Auxiliary wheels or rings with traction-increasing surface attachable to the main wheel body
  • E21D17/086 - or articulated type
  • H01H13/36 - using flexing of blade springs

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 267 - Spring devices