3564772

Information

• Patent Grant
• 3564772

• References
• Source

• Patent Number

  3,564,772

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1971
  53 years ago

• CPC

  • E05F17/001 - of prison cell doors

• US Classifications

  • 049 - Movable or removable closures