John T. Ryan Sr.

URI: https://gptkb.org/entity/John_T._Ryan_Sr.
GPTKB entity
Statements (15)
Predicate Object
gptkbp:instanceOf gptkb:person
gptkbp:child gptkb:John_T._Ryan_Jr.
gptkbp:dateOfBirth April 28, 1884
gptkbp:dateOfDeath August 15, 1963
gptkbp:founder gptkb:Mine_Safety_Appliances_Company
gptkbp:knownFor gptkb:Mine_Safety_Appliances_Company
gptkbp:nationality gptkb:American
gptkbp:occupation gptkb:businessman
gptkb:mining_engineer
gptkbp:spouse gptkb:Mary_Ryan
gptkbp:bfsParent gptkb:MSA_Safety
gptkb:Mine_Safety_Appliances
gptkb:MSA_Safety_Incorporated
gptkbp:bfsLayer 7
https://www.w3.org/2000/01/rdf-schema#label John T. Ryan Sr.
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