AL

Albert K. Langdon

EI Ekstrom Industries: 3 patents #8 of 22Top 40%
📍 Rochester, MI: #244 of 860 inventorsTop 30%
🗺 Michigan: #22,048 of 86,293 inventorsTop 30%
Overall (All Time): #1,296,182 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5207595 Watthour meter socket adapter with lockable terminal cover and sealing ring Robert O. Learmont, Darrell Robinson, Allen V. Pruehs, Robert Goozen 1993-05-04
4977482 Watthour meter socket adapter with interface connection Robert O. Learmont, Darrell Robinson, Robert Goozen, Michael E. Lewis, John Williams +2 more 1990-12-11
4934747 Electric meter socket sealing ring Peter Farbaniec, Louis Mattos, Jr., Michael E. Lewis, Darrell Robinson 1990-06-19
4622753 Electric meter socket repair kit and template for use therewith David W. Jones, Allen V. Pruehs, Darrell Robinson 1986-11-18