|
US2544610A
|
|
Numerical counter
|
|
US2544895A
|
|
System and apparatus for controlling and counting the output of screw machines
|
|
US2541376A
|
|
Switch
|
|
GB623646A
|
|
Impulse controlled escapement mechanism
|
|
GB623045A
|
|
Zero-reset device for numerical counters
|
|
GB620169A
|
|
Counting apparatus
|
|
US2544894A
|
|
Counting apparatus
|
|
US2514788A
|
|
Zero-reset device for numerical counters
|
|
US2493464A
|
|
Control apparatus and switch therefor
|
|
US2542626A
|
|
Impulse control device
|
|
US2465258A
|
|
Counter
|
|
US2423725A
|
|
Add and subtract counter and control device for a game apparatus
|
|
US2468269A
|
|
Radio direction finding equipment
|
|
US2487265A
|
|
Counting apparatus
|
|
US2487469A
|
|
Counter-actuating mechanism
|
|
US2366422A
|
|
Counting device
|
|
US2346869A
|
|
Predetermined counter control
|
|
US2426715A
|
|
Counting device
|
|
US2368874A
|
|
Registering and counting apparatus
|
|
US2272478A
|
|
Counting device
|
