Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Eye-protection device having dual high voltage switching

Eye-protection device having dual high voltage switching

US Patent 7180047 · Granted Feb 20, 2007

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Automatic darkening filter (ADF) eye protection device with improved drive circu2012
Microprocessor based automatically dimmable eye protection device with interrupt2012
Eye-protection device having dual high voltage switching2011
Microprocessor based automatically dimmable eye protection device with interrupt2010
Microprocessor based automatically dimmable eye protection device with interrupt2010
Auto darkening eye protection device having a regulated solar power supply2010
Eye-protection device having dual high voltage switching2008
Low power phototransistor-based welding helmet providing reduced sensitivity to 2008
Microprocessor based automatically dimmable eye protection device with interrupt2007
Eye-protection device having dual high voltage switching2006
Low power phototransistor-based welding helmet providing reduced sensitivity to 2006
Microprocessor based automatically dimmable eye protection device with interrupt2005