1840819

Information

• Patent Grant
• 1840819

• References
• Source

• Patent Number

  1,840,819

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1932
  92 years ago

• CPC

  • E05C7/002 - for sluice doors
  • Y10T70/60 - Systems

• US Classifications

  • 070 - Locks