Objects

Objects
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Patent- Self-toning photographic emulsion
Documentary
Edmund R. Bullock
Patent- Self-toning photographic emulsion
1923/05/08
1997.2485.0001
Patent- Toning process and product thereof
Documentary
Edmund R. Bullock
Patent- Toning process and product thereof
1918/12/03
1997.2484.0001
Patent- Process for producing colored images
Documentary
Edmund R. Bullock
Patent- Process for producing colored images
1918/09/17
1997.2483.0001
Patent- Tellurium toning bath and process for toning photographic El
Documentary
Edmund R. Bullock
Patent- Tellurium toning bath and process for toning photographic El
1918/07/23
1997.2482.0001
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