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For the Inventor, By the Inventor

Irving, TX, United States of America

Railpros Field Services, Inc.


USPTO Granted Patents = 3

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal Chad Smith (3 out of 3 patents)

silverMedal James C McDonald (2 out of 17 patents)


3 patents:

1. 12248894 - Supplemental safety system and method for use of same (2025-03-11),
2. 12240512 - Fixed signage and method for use of same (2025-03-04),
3. D984296 - Automated railroad signage device (2023-04-25),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#73 in Irving, TX

#4,782 in Texas

#73,733 in US

Irving, TX (US)
Irving, TX, United States of America

Railpros Field Services, Inc.

Forward Citations = 0

2 inventors:

goldMedal Chad Smith (3 out of 3 patents)

silverMedal James C McDonald (2 out of 17 patents)

Please report any incorrect information to [email protected]
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