53 Utility and 1 Design Patents
#2 in Ephrata, PA
#487 in Pennsylvania
#18,191 in US
#34,000 in the World
rank by utility patentsForward Citations = 451
Company Filing History:

Sperry Rand Corporation
Other
4. 4 out of 4
Separation Oil Services, Inc.
5. 1 out of 69

where one patent can have more than one assignee
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