CZ307138B6
2017-02-01
An electronic signal of queen bees with external accessories for easy localization of queens in the hive
CZ2013343A3
2013-05-13
Beehive with a device comprising tilting of honey chamber and roof as well as method of tilting beehive honey chamber or roof
CZ2010808A3
2010-11-09
Safe indication device of rail vehicle or train presence within rail sections of railway track
CS685289A2
1989-12-05
Safe ferrotransistor comparator of parallel code
CS274902B2
1989-02-13
Safe indicator circuit with increased resetting ratio
CS97088A1
1988-02-16
Connection of product-type relay with a higher resetting ratio
CS649087A1
1987-09-08
Circuit for testing of presence three different voltages
CS496887A1
1987-07-01
Safety delay circuit for relay
CS933485A1
1985-12-16
Connection of the supervision circuit of the flag signalling direct current
CS933385A1
1985-12-16
Signalling alternating-current supervisory circuit connection
CS759685A1
1985-10-23
Connection of two-phase contactless rail receiver
CS824784A1
1984-10-31
Push-pull decoder of unipolar code
CS216326B1
1980-02-27
Contactless polarized system
CS215626B1
1979-10-05
Control circuitry of safe frequency converter operation
CS208358B1
1978-07-10
Starting circuit of the frequency transducer,its outlet frequency becing derivated from the frequency of the input multiphase current
CS179804B1
1975-08-06
Random disturbance pulse safety circuit for capacitance decoder
