| Company | Location |
|---|---|
| Lake Shore Cryotronics Inc. | Westerville, Ohio, United States |
| Lambda Physik | Fort Lauderdale , Florida, United States |
| Lamina Ceramics Inc. | Westampton, New Jersey, United States |
| Landon IP, Inc. | Alexandria, Virginia, United States |
| Larta | Los Angeles, California, United States |
| Laser Light Technologies | Hermann, Michigan, United States |
| Laser Zentrum Hannover EV | Hannover, Germany |
| Lasko Products Inc. | West Chester, Pennsylvania, United States |
| LaunchCyte LLC | Pittsburgh, Pennsylvania, United States |
| Laurell Technologies Corp. | North Wales, Pennsylvania, United States |
