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Leonard W. Stephens — 3 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Fairview, PA: #35 of 90 inventorsTop 40%
Pennsylvania: #23,787 of 74,527 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Leonard W. Stephens has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 1981 and the most recent in October 1984. Leonard W. Stephens ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Leonard W. Stephens in Fairview, PA, US.

Patents per Year

Patents granted per year, 1981 to 1984Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811982: 1 patents19821984: 1 patents1984

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4478601 Coal briquette and method — 1984-10-23
4317392 Ratchet wrench Mack Salladay 1982-03-02
4297924 Ratchet wrench — 1981-11-03

Frequent Collaborators

Mack Salladay1 shared

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