Clarence S. Johnson

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Diver's pulse stretch sonar

Communications: electrical – Selective – Monitoring in addition to control
Patent

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Pulse transformation sonar

Communications – electrical: acoustic wave systems and devices – Sonar counter-measures
Patent

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Shaft position optical sensor

Optics: measuring and testing – By polarized light examination – With light attenuation
Reexamination Certificate

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Shark screen

Patent

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Profile ID: LFUS-PAI-P-204951

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