Johnston, Iowa
United States
6
2022-12-29
The entities that hold a legal rights for patent applications filed by inventor Devries Douglas E.:
Douglas E. Devries from Johnston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
APPARATUS, METHOD, AND SYSTEM FOR REMOTE CONTROL OF GROUND FAULT CIRCUIT INTERRUPTERS (GFCIS) IN ELECTRICAL SYSTEMS
#2 | 2015-01-08IGNITION INTERLOCK BREATHALYZER
#3 | 2011-12-22Apparatus, system, and method for implementing and monitoring breath alcohol testing programs, usually from a fixed point location, such as a home
#4 | 2011-04-14IGNITION INTERLOCK BREATHALYZER
#5 | 2010-01-21Ignition interlock breathalyzer
#6 | 2005-03-29Ticket counting dispenser
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