1786221

Information

• Patent Grant
• 1786221

• References
• Source

• Patent Number

  1,786,221

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1930
  94 years ago

• CPC

  • E05B15/1621 - Hardened bolts, or bolts with hardened inserts
  • Y10T70/7921 - Armoring
  • Y10T292/08 - Bolts

• US Classifications

  • 070 - Locks
  • 292 - Closure fasteners