For the Inventor, By the Inventor

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Smithfield, RI, United States of America

Frost Controls, Inc.

USPTO Granted Patents = 2

Forward Citations = 61

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4 inventors (with patents filed for the assignee):

Robert C Thomson (2 out of 5 patents)

Sandip Sarkar (2 out of 2 patents)

James Dogul (2 out of 2 patents)

4. Frederick Thomson (2 out of 3 patents)

2 patents: Sort by Forward Citations

1. 5559664 - Electromechanical relay system (1996-09-24),

2. 5218196 - Light curtain system with system and watchdog microcontrollers (1993-06-08),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#15 in Smithfield, RI

#401 in Rhode Island

#92,662 in US

Smithfield, RI, United States of America

Frost Controls, Inc.

Forward Citations = 61

4 inventors:

Robert C Thomson (2 out of 5 patents)

Sandip Sarkar (2 out of 2 patents)

James Dogul (2 out of 2 patents)

4. Frederick Thomson (2 out of 3 patents)

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