Forward Citations = 9

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2 inventors (with patents filed for the assignee):

Douglas Robert Hennigar (1 out of 9 patents)

Robert E Twining (1 out of 1 patent)

1 patent: Sort by Forward Citations

#348 in Ann Arbor, MI

#4,590 in Michigan

#136,850 in US

Beep-It Corporation

Forward Citations = 9

2 inventors:

Douglas Robert Hennigar (1 out of 9 patents)

Robert E Twining (1 out of 1 patent)

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