1721501

Information

• Patent Grant
• 1721501

• References
• Source

• Patent Number

  1,721,501

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1929
  95 years ago

• CPC

  • E05D13/1284 - specially adapted for overhead wings
  • E05Y2201/618 - Transmission ratio variation
  • E05Y2900/106 - for garages
  • Y10S16/31 - Pulley
  • Y10S292/46 - Sliding door fasteners
  • Y10T16/84 - Spring

• US Classifications

  • 160 - Flexible or portable closure, partition, or panel
  • 016 - Miscellaneous hardware
  • 292 - Closure fasteners