10 Utility Patents
#57 in Ambler, US
#7,242 in
#200,249 in US
#406,844 in the World
Forward Citations = 599
Company Filing History:
Leeds & Northrup Company
General Signal Corporation
Other
4. 1 out of 15,578

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#57 in Ambler, US
#7,242 in
#200,249 in US
#406,844 in the World
Company Filing History:

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