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- Date:
- 1925
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- May 08, 2025
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- should not be used for the green record. 3. Ultra-violet should not be recorded, as it
- Date:
- 1925
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- of a photo-electric cell with a stylus; D.R.P. 391,715; Camera (Luzerne) 1925, 3, 129
- Date:
- 1925
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- printing surfaces are shown in 3, 4 and 5. H. Tress*01 patented an aperture plate with
- Date:
- 1925
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- colored yellow. In 3 the lines are circular to avoid blurring. In 4, 5, 6 other
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- 1925
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- screen, while above the picture-taking lens was arranged another one 3 fitted with a right
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- 1925
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- yellow 3 g. But the taking filters were subjected later to some change. According to C. X
- Date:
- 1925
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- by the distance the prism was set above or below the center of the lens. In 3 the
- Date:
- 1925
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- about 2 to 3 degrees ; the pitch of the spectra on the plate was 100 per inch, which
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- 1925
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- , superposed base on apex, the angle of the prisms being from 3 to 8 degrees.
Lenticular
- Date:
- 1925
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128,781 653
129,638 617,652
129,717 618
130,002 653
130,603 638, 653
131,319 166. 3
