|
CA956007A
|
|
Signalling device
|
|
US3595007A
|
|
Resonator-driven timepiece
|
|
DE1929299A1
|
|
Resonator
|
|
US3560771A
|
|
Acoustically active resonator
|
|
US3437961A
|
|
Switch having a balance armature to prevent contact bounce
|
|
US3550090A
|
|
Method and system for determining whether a switch is open or closed
|
|
GB1198326A
|
|
Improvements in or relating to Electromechanical Resonators
|
|
US3559176A
|
|
Method and system for locating faults in utility electrical power systems
|
|
CA818066A
|
|
Resonator together with method and apparatus for varying the frequency thereof
|
|
CA888396A
|
|
Resonator
|
|
CA864114A
|
|
Frequency translation system, method and apparatus for the remote telemetry of data
|
