1801638

Information

• Patent Grant
• 1801638

• References
• Source

• Patent Number

  1,801,638

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • E06B3/44 - Vertically-sliding wings
  • Y10T292/1087 - Screw catch

• US Classifications

  • 292 - Closure fasteners