| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Elevators and escalators | |
| #2 | Pumps | |
| #3 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Masek Walter F | 6 |
| #2 | Tilton Russell G | 4 |
| #3 | Etten Peter W Van | 1 |
| #4 | Carl Mcgovney Albert | 1 |
| #5 | Richardson William F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2919786A | Moving stairway hand rails | |
| US2848093A | Handrail safety device | |
| US2780338A | Hand rail construction for moving stairs | |
| US2879881A | Moving stairway hand rail construction | |
| US2766868A | Moving stairway hand rails | |
| US2656031A | Moving stairway | |
| US2628700A | Handrail for moving stairways | |
| US2578567A | Handrail for moving stairways | |
| US2578566A | Escalator handrail | |
| US2545741A | Escalator hand rail | |
| US2545740A | Escalator | |
| US2435179A | Oil well pump |