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USPTO Patent Rankings Data through Dec 31, 2025
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Mark E. Lockwood — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Portola Valley, CA: #376 of 621 inventorsTop 65%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Mark E. Lockwood has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1988 and the most recent in March 1991. Mark E. Lockwood ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Mark E. Lockwood in Portola Valley, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D315052 Visor Gini L. Hetherington 1991-03-05
4779170 Phonograph record illumination device and system Duane D. Beyer, Paul Kardel, Charles Lockwood 1988-10-18