2158995

Information

• Patent Grant
• 2158995

• References
• Source

• Patent Number

  2,158,995

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1939
  85 years ago

• CPC

  • H01J19/30 - characterised by the material
  • H01J2893/0021 - carbon
  • Y10T29/5196 - Multiple station with conveyor
  • Y10T409/30 - Milling

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 029 - Metal working
  • 144 - Woodworking
  • 409 - Gear cutting, milling, or planing
  • 445 - Electric lamp or space discharge component or device manufacturing