| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Unspecified technologies | |
| #3 | Goods for writing upon | |
| #4 | Brushes | |
| #5 | Unspecified technologies | |
| #6 | Stamps | |
| #7 | Filing and indexing | |
| #8 | Books |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rosenthal Sidney N | 17 |
| Publication | Filing date | Title |
|---|---|---|
| US3050768A | Felt pack construction of pens | |
| US3044101A | Nib bushings | |
| US3051980A | Stenciling devices | |
| US3020578A | Combination ink well and felt nib pen | |
| US3035542A | Inkwells | |
| US3000355A | Marking devices | |
| US2999266A | Marking devices | |
| US3003182A | Fountain pens | |
| US3003183A | Marking devices | |
| US3048879A | Fountain pen | |
| US3003461A | Marking fluid container | |
| US3003468A | Line markers | |
| US3003181A | Marking device with snap-on head assembly | |
| US3003184A | Marking devices | |
| US3030922A | Combined clip-board and marking device |