PD

Paul L. Dreyer

EI Ecolaire Incorporated: 2 patents #3 of 15Top 20%
📍 Allentown, PA: #422 of 1,150 inventorsTop 40%
🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%
Overall (All Time): #1,678,880 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4561472 Sliding blade closure apparatus with inflatable sealing ring William R. McLennan 1985-12-31
4491144 Flexible seals for sliding blade dampers Russell F. Rarick 1985-01-01
4474205 Sliding blade apparatus for closing conduits William R. McLennan, Kenneth I. Conley 1984-10-02