| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Audio-visual technology | |
| #4 | Machine tools | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Chairs and beds | |
| #2 | Office furniture | |
| #3 | Unspecified technologies | |
| #4 | Hand-held cutting tools | |
| #5 | Servomotors | |
| #6 | Advertising |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koken Walter F | 10 |
| #2 | Koken Ernest E | 2 |
| #3 | Anderson George G | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1379450A | Power-operated hair-clipper | |
| US1302672A | Barber-chair. | |
| US1233249A | Chiropody-chair. | |
| US1178732A | Barber-pole. | |
| US1242110A | Barber's chair. | |
| US1242109A | Barber's chair. | |
| US1178733A | Barber-chair. | |
| US1162290A | Manicurist-table. | |
| US1098158A | Chair-back. | |
| US987580A | Reclining mechanism for barbers' chairs. | |
| US1098157A | Barber's chair. |