Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Ground fault detector for DC power supply

Ground fault detector for DC power supply

US Patent 4253056 · Granted Feb 24, 1981

Estimated economic value: $7,927,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Fire alarm control and emergency communication system1987
Flame detector with test lamp and adjustable field of view1985