1972648

Information

• Patent Grant
• 1972648

• References
• Source

• Patent Number

  1,972,648

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1934
  90 years ago

• CPC

  • B42C7/006 - Folding the edges of covers

• US Classifications

  • 412 - Bookbinding: process and apparatus