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Next ten patents ordered by date:

Seismic detector arrays
Combined electret hydrophone and transmission line
Remote detector to indicate leakage of liquids in toilet tanks
Intrusion alarm apparatus
Radio and television alarm system
Graphic display device
Device in a time piece for feeding an electro-luminescent display
DC gas panel electrical display device
Programmable light display system
Simplified digital conversion for coherent-on-receive pulsed radar system

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