Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and arrangement for measuring changes of capacitive state at a security fence

Method and arrangement for measuring changes of capacitive state at a security fence

US Patent 4684932 · Granted Aug 4, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Electrode arrangement for capacitive guard fences1986
Electrode arrangement for capacitive guard fences1986
Electrode arrangement for capacitive guard fences1986
Measuring arrangement for capacitive security fences1985
Method and apparatus for monitoring an alarm system1985
Method and apparatus for inspecting a danger alarm system1985
Method and apparatus for increasing the response sensitivity and the interferenc1985
Method and circuit arrangement for measuring a magnetic field1985
Correction method and device for a magnetic field probe1983
Danger alarm system1981
Danger alarm system1981