HM

Harold E. McCullough

BL Bell Telephone Laboratories: 4 patents #115 of 1,445Top 8%
AT AT&T: 1 patents #10,626 of 18,772Top 60%
📍 Blacklick, OH: #11 of 82 inventorsTop 15%
🗺 Ohio: #11,686 of 73,341 inventorsTop 20%
Overall (All Time): #769,536 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4706056 Electrical relay apparatus 1987-11-10
4701721 Core formed of hard and soft magnetic materials for an electrical relay apparatus 1987-10-20
4594490 Terminal pin shorting switch apparatus 1986-06-10
4433477 Keying block extracting tool James D. Karga 1984-02-28
4415229 Optical fiber switch apparatus 1983-11-15
4322700 Electrical relay apparatus Billy M. Everhart 1982-03-30
4260972 Electromechanical relay apparatus Billy M. Everhart 1981-04-07