Scanner for detecting and indicating missing and wedged...

Seed counting and frequency measurement apparatus and method

Seed counting apparatus for a planter monitor

Seed counting apparatus for a planter monitor

Seed drill surveyor

Seed planter monitoring system with fiber-optic sensors

Sequential control system for a lift truck

Setting circuit

Shaft construction for non-reversible odometer

Shaft encoder

Sheet counter system

Shielded balanced loop antennas for electronic security systems

Shutter mechanism for counters

Simplified count assembly

Slug detector for parking meters

Snap action transfer pinion

Speed indicator and distance recorder

Speedometer

Speedometer and road indicator

Spring-powered preloaded cameras and cartridges