% Expired Patents = 100.0

Forward Citations = 1

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3 inventors (with patents filed for the assignee):

Harold Y Walker, Jr (1 out of 1 patent)

David Underwood (1 out of 1 patent)

Paul M Hamilton (1 out of 11 patents)

1 patent: Sort by Forward Citations

#347 in Fort Worth, TX

#9,235 in Texas

#136,675 in US

Sigmapro Engineering and Manufacturing, LLC

Forward Citations = 1

3 inventors:

Harold Y Walker, Jr (1 out of 1 patent)

David Underwood (1 out of 1 patent)

Paul M Hamilton (1 out of 11 patents)

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