Patent for Perfectionnements apportés aux procédés pour obtenir des effets spéciaux lors dela projection de fonds de théâtres, de vitrines, de réclames, etc., Geyling, Planer, 1928 (Q38422)

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Improvements made to processes for obtaining special effects when projecting backdrops for theatres, shop windows, advertisements, etc.,

Improvements made to processes for obtaining special effects when projecting backdrops for theatres, shop windows, advertisements, etc.,
  • FR635032A
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English
Patent for Perfectionnements apportés aux procédés pour obtenir des effets spéciaux lors dela projection de fonds de théâtres, de vitrines, de réclames, etc., Geyling, Planer, 1928
Improvements made to processes for obtaining special effects when projecting backdrops for theatres, shop windows, advertisements, etc.,
  • FR635032A

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