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Methods and apparatus for discriminating between the front and b

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Methods for automated uniformity assessment and modification...

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Reexamination Certificate

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Microdensitometer system with micrometer resolution for...

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Reexamination Certificate

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Microscopic photometry apparatus

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Optical densitometer

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Optical densitometer

Optics: measuring and testing – For light transmission or absorption – Of photographic film
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Photographic film blackening area measuring device

Optics: measuring and testing – For light transmission or absorption – Of photographic film
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Quantitative analysis of biological materials and photogrtaphic

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Radiographic imaging system quality monitor

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Spot microdensitometer for spectral density analysis of film

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Step tablet

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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System for measuring the optical density of both the background

Optics: measuring and testing – For light transmission or absorption – Of photographic film
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System for recording information on photographic image density a

Optics: measuring and testing – For light transmission or absorption – Of photographic film
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