Patent Leaderboard

Search Companies Inventors Cities States

PL

Peter Graham Litchfield

Overall (1989): #69,606 of 140,708Top 50%

1

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4874169	Ball	—	1989-10-17

Your Patent Widget

Preview how it looks, then copy the embed code to add it to your website.

Embed Code

                <iframe src="https://www.patentleaderboard.com/widget/inventor/2354404" width="100%" height="400" frameborder="0" style="border:none;border-radius:12px;display:block;"></iframe>
            

© 2026 Patent Leaderboard. Data from USPTO via PatentsView.