WM

William Gordon McCallum

3M: 1 patents #7,233 of 11,543Top 65%
📍 Maplewood, MN: #253 of 510 inventorsTop 50%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,205,494 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6609329 Insect trap and fitting 2003-08-26
5493327 Method and apparatus for producing image reproducing materials using photothermographic material sensitive to radiation in the red region and transparent to radiation in the ultraviolet range of the electromagnetic spectrum Richard C. Cotner 1996-02-20