DC

Donald W. Carnes

EL Electratherm: 2 patents #6 of 11Top 55%
RP Ryobi Motor Products: 2 patents #23 of 65Top 40%
📍 Cockeysville, MD: #86 of 330 inventorsTop 30%
🗺 Maryland: #8,004 of 35,612 inventorsTop 25%
Overall (All Time): #1,293,524 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5477587 Vacuum power head with bare floor feature William K. Glenn, III, James F. Barnes, Jr. 1995-12-26
5317784 Vacuum power head with bare floor feature William K. Glenn, III, James F. Barnes, Jr. 1994-06-07
4321744 Method of securing a metal sheathed electric heating element 1982-03-30
4241291 Mounting means for sheathed heating elements and method 1980-12-23