For the Inventor, By the Inventor

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Plymouth, MN, United States of America

Blue-gear, Inc.

USPTO Granted Patents = 3

Forward Citations = 5

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5 inventors (with patents filed for the assignee):

Randall Wayne Roberts (3 out of 19 patents)

Lawrence T Hagen (3 out of 16 patents)

Margaret V Nilson (3 out of 3 patents)

4. Johan D Carlson (2 out of 2 patents)

5. D Johan Carlson (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 10212525 - Universal earpiece (2019-02-19),

2. 9398362 - Universal earpiece (2016-07-19),

3. D698445 - Earpiece (2014-01-28),

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USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#108 in Plymouth, MN

#1,945 in Minnesota

#71,950 in US

Plymouth, MN, United States of America

Blue-gear, Inc.

Forward Citations = 5

5 inventors:

Randall Wayne Roberts (3 out of 19 patents)

Lawrence T Hagen (3 out of 16 patents)

Margaret V Nilson (3 out of 3 patents)

4. Johan D Carlson (2 out of 2 patents)

5. D Johan Carlson (1 out of 1 patent)

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