| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 119 | |
| #2 | Canada | 17 | |
| #3 | Germany | 14 | |
| #4 | United Kingdom | 14 | |
| #5 | France | 10 | |
| #6 | Switzerland | 7 | |
| #7 | Denmark | 4 | |
| #8 | Austria | 3 | |
| #9 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Computer technology | |
| #4 | Telecommunications | |
| #5 | Textiles and paper | |
| #6 | Mechanical elements | |
| #7 | Audio-visual technology | |
| #8 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Unspecified technologies | |
| #3 | Mechanically computing digital computers | |
| #4 | Telephonic communication | |
| #5 | Typewriters | |
| #6 | Springs | |
| #7 | Advertising | |
| #8 | Machines for artistic work | |
| #9 | Unspecified technologies | |
| #10 | Packaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wahl John C | 55 |
| #2 | Poole Arthur F | 18 |
| #3 | Stenersen Albert H | 12 |
| #4 | Wahl Company The | 7 |
| #5 | Robert Back | 5 |
| #6 | John Straka | 4 |
| #7 | Keeran Charles R | 4 |
| #8 | Lungren Arthur N | 3 |
| #9 | Tefft Ivan D | 3 |
| #10 | Back Robert | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2142532A | Fountain pen | |
| GB489881A | Improvements in mechanical pencils | |
| US2142531A | Fountain pen | |
| US2158991A | Mechanical pencil | |
| US2151548A | Decorative tubular article of pyroxylin or the like | |
| US2105049A | Pen | |
| US2095091A | Mechanical pencil | |
| US2142533A | Fountain pen | |
| DE644681C | Nib with a slide to change the flexibility of the tip legs | |
| US2120059A | Fountain pen | |
| US1989990A | Fountain pen | |
| US1990441A | Fountain pen | |
| GB407253A | Improvements in writing implements | |
| GB407824A | Improvements in and relating to writing implements | |
| US1980159A | Writing implement | |
| US1946085A | Mechanical pencil | |
| US1967484A | Mechanical pencil | |
| US1916199A | Writing implement | |
| US1943792A | Pencil eraser | |
| US2014150A | Apparatus for molding objects of pyralin and other material that is plastic when heated |