4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers
  6. Underwater type

Raymond B. Schaefer

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High efficiency and projection reflectors for light and sound

Optical: systems and elements – Mirror – Plural mirrors or reflecting surfaces
Reexamination Certificate

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High efficiency long lifetime sparker sources

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate

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Sparker source systems

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent

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Surface discharge lamp

Electric lamp and discharge devices: systems – Discharge device load – Plural cathode and/or anode discharge device load
Patent

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Surface discharge lamp and system

Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For plural electrodes of discharge device
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1629621

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