3378304

Information

• Patent Grant
• 3378304

• References
• Source

• Patent Number

  3,378,304

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1968
  57 years ago

• CPC

  • B66C5/10 - Portals

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 052 - Static structures
  • 405 - Hydraulic and earth engineering
  • 414 - Material or article handling
  • D25 - Building units and construction elements