| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 5 | |
| #3 | United Kingdom | 4 | |
| #4 | Ireland | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Electrical machinery and energy | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Finishing work on buildings | |
| #2 | Motor vehicles | |
| #3 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bessler Frank E | 20 |
| Publication | Filing date | Title |
|---|---|---|
| US1936930A | Disappearing stairway | |
| US1953038A | Household appliances | |
| US1922012A | Switch | |
| US1930992A | Disappearing stairway | |
| GB330784A | Improvements in or relating to disappearing stairways | |
| IE10719L | Disappearing stairways | |
| GB333595A | Improvements in or relating to stairways | |
| IE10700L | Disappearing stairways | |
| US1936929A | Disappearing stairway | |
| US1811710A | Disappearing stairway | |
| US1821872A | Disappearing stairway | |
| US1811820A | Disappearing stairway | |
| IE10481L | Improvements in stairways | |
| IE10497L | Disappearing stairways | |
| GB315850A | Improvements in or relating to stairways | |
| GB305991A | Improvements in or relating to stairways | |
| US1811709A | Disappearing stairway | |
| US1867904A | Disappearing stairway | |
| US1858981A | Disappearing stairway | |
| US1811708A | Disappearing stairway |