1921568

Information

• Patent Grant
• 1921568

• References
• Source

• Patent Number

  1,921,568

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • E05C17/54 - Portable devices
  • Y10S292/15 - Door, checks, floor
  • Y10T16/61 - Closure checks
  • Y10T292/1051 - Spring projected
  • Y10T292/1063 - Gravity actuated
  • Y10T292/67 - Portable
  • Y10T292/74 - Weights

• US Classifications

  • 292 - Closure fasteners
  • 016 - Miscellaneous hardware