8 Utility Patents
#23 in Perkasie, PA
#9,364 in Pennsylvania
#254,516 in US
#521,303 in the World
Forward Citations = 451
Company Filing History:

Telefax Incorporated
General Signal Corporation
4. 1 out of 73
Leeds & Northrup Company
5. 1 out of 3,645
Honeywell G.m.b.h.
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