For the Inventor, By the Inventor

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Beford, MA, United States of America

Digital Marine Electronics Corporation

USPTO Granted Patents = 3

Forward Citations = 69

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4 inventors (with patents filed for the assignee):

Sheldon B Michaels (2 out of 3 patents)

Mark J Giubardo (2 out of 3 patents)

Jeffrey M Morris (1 out of 19 patents)

4. Otis Philbrick (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4812851 - Radio receiver with automatic interference cancellation (1989-03-14),

2. 4549312 - Radio receiver with automatic interference and distortion compensation (1985-10-22),

3. 4166275 - Loran receiver system (1979-08-28),

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#1 in Beford, MA

#3,875 in Massachusetts

#71,950 in US

Beford, MA, United States of America

Digital Marine Electronics Corporation

Forward Citations = 69

4 inventors:

Sheldon B Michaels (2 out of 3 patents)

Mark J Giubardo (2 out of 3 patents)

Jeffrey M Morris (1 out of 19 patents)

4. Otis Philbrick (1 out of 1 patent)

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