|
US3153236A
|
|
System and method for detection
|
|
US2823365A
|
|
Electro-acoustic system and method
|
|
US2753448A
|
|
Radio-wave pulse system
|
|
US2711514A
|
|
Wave guide modulation system
|
|
US2711133A
|
|
Fuse
|
|
US2864030A
|
|
Radio-receiving and scanning system
|
|
US2864029A
|
|
Electric system
|
|
US2528726A
|
|
Electric system
|
|
US2497913A
|
|
Range and elevation computing system
|
|
US2612637A
|
|
Pulse-echo tracking system
|
|
US2786132A
|
|
Power transmission
|
|
US2769975A
|
|
Electromagnetic object-tracking-anddestroying method and system
|
|
US2640190A
|
|
System for measuring the thickness of opaque objects
|
|
US2711440A
|
|
Microwave scanning system
|
|
US2528730A
|
|
Sonic picture system
|
|
US2528727A
|
|
Sonic picture system
|
|
US2528729A
|
|
Object detecting system producing a visible likeness of the object
|
|
US2611894A
|
|
Thermoelectric system for remote object images
|
|
US2539593A
|
|
Electroacoustic system
|
|
US2528725A
|
|
Sound ranging system
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