Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373120 | Linear door motor system for elevators | David W. Barrett, Richard E. Peruggi, Ernest P. Gagnon | 1994-12-13 |
| 5351516 | Rail repair device | — | 1994-10-04 |
| 5346371 | Hydraulic elevator oil tank | Rajendra Mistry | 1994-09-13 |
| 5207295 | Lightweight prefabricated elevator cab | Eric G. Olsen | 1993-05-04 |
| 5199530 | Retainer assembly | — | 1993-04-06 |
| 5195614 | Hydraulic cushionride elevator | John Hornyack, Rajendra Mistry | 1993-03-23 |
| 5101930 | Hydraulic elevator muffler | Richard N. Fargo, Sib S. Ray, Henry Ryder | 1992-04-07 |
| 5076146 | Method and apparatus for protecting a cylinder of an hydraulic elevator | Berry M. Grant, John T. Pitts, Sib S. Ray | 1991-12-31 |
| 4977982 | Elevator sheave brake safety | Anthony Cooney, William G. Sheridan, Edward D. Reiskin | 1990-12-18 |
| 4635907 | Hydraulic buffer for elevators | Frederick P. Menet | 1987-01-13 |