For the Inventor, By the Inventor

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Grand Rapids, MI, United States of America

Dfs Linkages, Inc.

USPTO Granted Patents = 2

Forward Citations = 60

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8 inventors (with patents filed for the assignee):

Michael D Doyle (2 out of 30 patents)

Paul F Doyle (2 out of 8 patents)

Glenn W Bernsohn (2 out of 3 patents)

4. Robert G Hamilton (1 out of 2 patents)

5. Marc C Perrone (1 out of 1 patent)

6. Jeffrey D Roberts (1 out of 1 patent)

7. Kirk James Wolf (1 out of 1 patent)

8. Stephen P Goetze (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 7210035 - System and method for graphical indicia for the certification of records (2007-04-24),

2. 7047415 - System and method for widely witnessed proof of time (2006-05-16),

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USPTO Data Jan 1 1976 - Jan 13 2026

2 Patents

#167 in Grand Rapids, MI

#3,130 in Michigan

#92,762 in US

Grand Rapids, MI, United States of America

Dfs Linkages, Inc.

Forward Citations = 60

8 inventors:

Michael D Doyle (2 out of 30 patents)

Paul F Doyle (2 out of 8 patents)

Glenn W Bernsohn (2 out of 3 patents)

4. Robert G Hamilton (1 out of 2 patents)

5. Marc C Perrone (1 out of 1 patent)

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