3828454

Information

• Patent Grant
• 3828454

• References
• Source

• Patent Number

  3,828,454

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • G09F3/02 - Forms or constructions
  • G09F2003/0232 - Resistance to heat
  • G09F2003/0233 - Resistance to humidity
  • G09F2003/0238 - Stress resistant

• US Classifications

  • 040 - Card, picture, or sign exhibiting