George A. Copley

DC Donaldson Company: 4 patents #253 of 695Top 40%

📍 Farmington, MN: #50 of 165 inventorsTop 35%

🗺 Minnesota: #15,886 of 52,454 inventorsTop 35%

Overall (All Time): #1,306,888 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
RE32185	Self-cleaning pulsed air cleaner	—	1986-06-17
4364751	Self-cleaning pulsed air cleaner	—	1982-12-21
4359330	Self-cleaning pulsed air cleaner with integral precleaner	—	1982-11-16
4331459	Self-cleaning pulsed air cleaner	—	1982-05-25