3644688

Information

• Patent Grant
• 3644688

• References
• Source

• Patent Number

  3,644,688

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • B60M1/20 - Arrangements for supporting or suspending trolley wires

• US Classifications

  • 191 - Electricity: transmission to vehicles
  • 267 - Spring devices