2758631

Information

• Patent Grant
• 2758631

• References
• Source

• Patent Number

  2,758,631

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1956
  69 years ago

• CPC

  • B32B37/185 - Laminating sheets, panels or inserts between two discrete plastic layers
  • B29C65/04 - Dielectric heating, e.g. high-frequency welding
  • B29C65/7441 - for making welds and cuts of other than simple rectilinear form
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/80 - General aspects of machine operations or constructions and parts thereof
  • B29C66/8322 - Joining or pressing tools reciprocating along one axis
  • B42C7/00 - Manufacturing bookbinding cases or covers of books or loose-leaf binders
  • B29C66/73143 - Dielectric properties
  • B29L2031/7052 - Book covers
  • Y10S412/902 - Heating and pressing

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 219 - Electric heating
  • 412 - Bookbinding: process and apparatus