DH

Douglas S. Hammond

CT Cooper Technologies: 3 patents #4 of 77Top 6%
HL Holophane Lighting: 1 patents #7 of 8Top 90%
📍 Newark, OH: #4 of 33 inventorsTop 15%
🗺 Ohio: #104 of 4,093 inventorsTop 3%
Overall (1994): #6,546 of 165,921Top 4%
4
Patents 1994

Issued Patents 1994

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5355291 Internally illuminated sign Gregory J. Subisak 1994-10-11
D348945 Outdoor roadway lighting fixture David E. Mehaffey 1994-07-19
D348531 Outdoor roadway lighting fixture David E. Mehaffey 1994-07-05
D347080 Outdoor roadway lighting fixture David E. Mehaffey 1994-05-17