4. Radiant energy
  5. Invisible radiant energy responsive electric signalling
  6. With or including a luminophor

John C. Franklin

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Constant flow radon gas monitor

Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
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Increased production of wet process phosphoric acid by gelatin a

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
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Profile ID: LFUS-PAI-P-955689

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