Water in oil detection plug

Water ski locating device

Water ski safety flag

Water skier warning flag system

Water-pressure sensitive dye release apparatus

Water-wheel bathtub float alarm

Watering indicator for hanging plants

Way-guidance marker

Wear indicator for a brake shoe, especially a disc-type brake sh

Wear indicator for rotary drilling tools

Wear indicator for vehicle air brakes

Wear-through detector for multilayered parts and methods of usin

Web marking device

Web marking device

Weight responsive spray bird-scare perch

Wetness indicating composition

Wetness indicator having improved colorant retention

Wetness indicator having improved colorant retention and...

Wetness indicator having improved colorant retention and...

Wetting indicator for composites