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For the Inventor, By the Inventor

Oakland, CA, United States of America

Wrb Company, Inc.


USPTO Granted Patents = 2

Forward Citations = 77

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2 inventors (with patents filed for the assignee):

goldMedal Robert Ward Carter (2 out of 8 patents)

silverMedal Robert Williams Carter (2 out of 4 patents)


2 patents:

1. 6524031 - Device and method for trenchless replacement of underground pipe (2003-02-25),
2. 6305880 - Device and method for trenchless replacement of underground pipe (2001-10-23),
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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#171 in Oakland, CA

#20,531 in California

#92,551 in US

...
Oakland, CA, United States of America

Wrb Company, Inc.

Forward Citations = 77

2 inventors:

goldMedal Robert Ward Carter (2 out of 8 patents)

silverMedal Robert Williams Carter (2 out of 4 patents)

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