Trademarks = 1

Forward Citations = 14

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4 inventors (with patents filed for the assignee):

Thomas A Walker (2 out of 4 patents)

Stephen R Means (2 out of 2 patents)

Richard Smith (1 out of 12 patents)

4. Richard K Smith, Jr (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 7419017 - Multi-sectional percussive drill bit assembly (2008-09-02),

2. 7389833 - Multi-sectional percussive drill bit assembly (2008-06-24),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#7 in Somerset, PA

#3,428 in Pennsylvania

#94,905 in US

Somerset, PA, United States of America

Keystone Drill Services, Inc.

Forward Citations = 14

4 inventors:

Thomas A Walker (2 out of 4 patents)

Stephen R Means (2 out of 2 patents)

Richard Smith (1 out of 12 patents)

4. Richard K Smith, Jr (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Keystone Drill Services, Inc.. Retrieved from https://idiyas.com/company/keystone-drill-services

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]