1639904

Information

• Patent Grant
• 1639904

• References
• Source

• Patent Number

  1,639,904

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1927
  97 years ago

• CPC

  • E05C7/002 - for sluice doors
  • A47G29/20 - with appliances for preventing unauthorised removal of the deposited articles

• US Classifications

  • 232 - Deposit and collection receptacles
  • 049 - Movable or removable closures