2457662

Information

• Patent Grant
• 2457662

• References
• Source

• Patent Number

  2,457,662

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1948
  76 years ago

• CPC

  • B42D9/001 - Devices for indicating a page in a book

• US Classifications

  • 116 - Signals and indicators