| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Civil engineering | |
| #3 | Measurement | |
| #4 | Telecommunications | |
| #5 | Control | |
| #6 | Machines | |
| #7 | Mechanical elements | |
| #8 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lewis James E | 12 |
| #2 | Herzog Stephen E | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2009222224A1 | Multi-circuit direct current monitor with Modbus serial output | |
| US2007195870A1 | Wireless mesh data acquisition network | |
| US2972827A | Perpetual calendars | |
| US2924876A | Thread lubricant package and method | |
| US2417695A | International time and day clock | |
| US1740107A | Annunciating switch device | |
| US955887A | Railroad-frog. | |
| CA124163A | Rod for switch points | |
| US911054A | Railroad-track frog. | |
| US900750A | Connecting-rod for switch-points. | |
| US862645A | Railroad-frog. |