DL

Douglas B. LaBrecque

OE Otis Elevator: 2 patents #650 of 1,840Top 40%
📍 West Springfield, MA: #40 of 111 inventorsTop 40%
🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%
Overall (All Time): #1,977,169 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10364128 Method of installing a vertically extending member in an elevator system Valery Sheynkman, Richard S. Blakelock, Troy R. Chicoine, Craig A. Buckley, William J. Derwin 2019-07-30
9604823 Assembly for roping an elevator Valery Sheynkman, Richard S. Blakelock, Troy R. Chicoine, Craig A. Buckley, William J. Derwin 2017-03-28