John H. Crankshaw

DY Dynetics: 4 patents #1 of 25Top 4%

📍 Erie, PA: #205 of 1,097 inventorsTop 20%

🗺 Pennsylvania: #15,920 of 74,527 inventorsTop 25%

Overall (All Time): #1,062,400 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
4955768	Fixture for making a gear	—	1990-09-11
4955769	Gear coupling and hub	—	1990-09-11
4872791	Method of forming crowned gear teeth	—	1989-10-10
4385429	Method of manufacturing a clutch plate	—	1983-05-31
4275805	Overrunning clutch	—	1981-06-30