|
gptkbp:instanceOf
|
gptkb:company
|
|
gptkbp:acquiredBy
|
gptkb:Herbert_George_Company
|
|
gptkbp:ceased_operations
|
1972
|
|
gptkbp:distributedBy
|
gptkb:Australia
gptkb:Canada
gptkb:United_Kingdom
gptkb:United_States
other countries
|
|
gptkbp:founded
|
1892
|
|
gptkbp:founder
|
gptkb:B._L._Singley
|
|
gptkbp:hasCollection
|
gptkb:Smithsonian_Institution
gptkb:California_Museum_of_Photography
gptkb:U.S._Library_of_Congress
|
|
gptkbp:headquartersLocation
|
gptkb:Meadville,_Pennsylvania,_United_States
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Keystone View Company
|
|
gptkbp:industry
|
optical instruments
stereoscopic images
|
|
gptkbp:notableEmployee
|
gptkb:B._L._Singley
|
|
gptkbp:notableFor
|
largest producer of stereoscopic images in the world
|
|
gptkbp:notableProduct
|
gptkb:Keystone_600-card_set
gptkb:Keystone_Eye_Comfort_Test
|
|
gptkbp:numberOfEmployees
|
over 300 (at its peak)
|
|
gptkbp:product
|
educational materials
stereographs
stereoscopes
vision testing equipment
|
|
gptkbp:bfsParent
|
gptkb:Keystone-Mast_Collection
|
|
gptkbp:bfsLayer
|
7
|