|
US5012160A
|
|
Accordion mount for solar cells including point-of-purchase display with leds
|
|
US3749859A
|
|
Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
|
|
US3751612A
|
|
Snap action capacitive type switch
|
|
US3710209A
|
|
Variable capacitor
|
|
CA930311A
|
|
Capacitive electric signal device and keyboard using said device
|
|
US3701885A
|
|
Data collection station and static card reader therefor
|
|
DE1774711A1
|
|
Data collection station with card reader
|
|
GB1214696A
|
|
Improvements relating to data collection systems
|
|
GB1213889A
|
|
Digital data storage circuit for data recording and transmission systems
|
|
US3553436A
|
|
Data collection station and static card reader therefor
|
|
US3387287A
|
|
Digital data storage circuit for data recording and transmission systems
|
|
US3267373A
|
|
Resonance bridge or frequency discriminator circuit and sensing system
|
