3741558

Information

• Patent Grant
• 3741558

• References
• Source

• Patent Number

  3,741,558

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  52 years ago

• CPC

  • E05F1/1075 - for counterbalancing
  • E05D13/1215 - specially adapted for overhead wings
  • E05D15/463 - specially adapted for overhead wings
  • E05Y2201/488 - Traction springs
  • E05Y2201/492 - Spring tensioners, tension sensors
  • E05Y2800/21 - of identical elements
  • E05Y2900/106 - for garages

• US Classifications

  • 267 - Spring devices