John T. Callahan, Jr.

WC Western Electric Company: 1 patents #173 of 531Top 35%

📍 Tewksbury, MA: #166 of 382 inventorsTop 45%

🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%

Overall (All Time): #1,963,641 of 4,157,543Top 50%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D828135	Combination tool	Dorothy A. Callahan	2018-09-11
4421265	Wave-soldering a member to an article	Albert E. Boyer, Peter P. Filocamo	1983-12-20