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For the Inventor, By the Inventor

Houston, TX, United States of America

Seaboard Wellhead Control, Inc.


USPTO Granted Patents = 3

Forward Citations = 69

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2 inventors (with patents filed for the assignee):

goldMedal John W Freeman, Jr (2 out of 8 patents)

silverMedal Bill W Clark (1 out of 1 patent)


3 patents:

1. 4693534 - Electric fed-thru connector assembly (1987-09-15),
2. 4519582 - Seal assembly and valve (1985-05-28),
3. 4376526 - Seal assembly and valve (1983-03-15),
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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#1,209 in Houston, TX

#4,782 in Texas

#73,766 in US

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

Seaboard Wellhead Control, Inc.

Forward Citations = 69

2 inventors:

goldMedal John W Freeman, Jr (2 out of 8 patents)

silverMedal Bill W Clark (1 out of 1 patent)

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