| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Audio-visual technology | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Office furniture | |
| #3 | Special furniture | |
| #4 | Household appliances | |
| #5 | Frames | |
| #6 | General building constructions | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Howell David S | 13 |
| #2 | David Howell | 2 |
| #3 | Howell David | 2 |
| #4 | Smith Dennis J | 1 |
| #5 | Woodle J | 1 |
| #6 | Woodle John C | 1 |
| #7 | Smith D | 1 |
| #8 | Sarkisian Robert S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3852901A | Display stand | |
| CA988298A | Display stand | |
| GB1116755A | Folding easel | |
| US3313513A | Literature display and dispensing rack | |
| GB1045959A | Display panel assembly | |
| US3294251A | Folding display rack | |
| US3295815A | Folding easel | |
| US3289341A | Poster frame | |
| US3167187A | Sectional display shelf structure | |
| US3204689A | Display panel assembly | |
| US3178841A | Poster holding device | |
| US3102351A | Double-sided poster holder | |
| US3083489A | Display assembly and poster holder | |
| GB868268A | Improvements in or relating to devices for holding sheet material against support surfaces | |
| US2973933A | Foldable tripod easel | |
| US2953341A | Folding easel | |
| US2882633A | Poster holder | |
| CA793527A | Folding easel | |
| CA776374A | Display panel assembly | |
| CA613812A | Poster holder |