| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 6 | |
| #3 | France | 3 | |
| #4 | Germany | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Audio-visual technology | |
| #3 | Machines | |
| #4 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Advertising | |
| #3 | Unspecified technologies | |
| #4 | Buttons, pins and buckles | |
| #5 | Candles | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koeln Harold E | 8 |
| #2 | Isenmann Robert L | 2 |
| #3 | Koeln H | 2 |
| #4 | Sherman Alan E | 2 |
| #5 | Schultz Hugo C | 1 |
| #6 | Koeln Harold Emil | 1 |
| #7 | Paige Walter W Jr | 1 |
| #8 | Wright C | 1 |
| #9 | Schultz H | 1 |
| #10 | Emil Koeln Harold | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4217712A | Conical pen | |
| US4257713A | Conical pen | |
| US4161374A | Twist retractable writing implement | |
| CA1044192A | Separable key holder | |
| US3979934A | Separable key holder | |
| CA1018480A | Retractable pen with auxiliary retraction member | |
| US3819282A | Retractable pen | |
| US3744957A | Display candle | |
| US3729269A | Pen casing | |
| US3583820A | Writing instruments | |
| US3480370A | Writing instruments | |
| CA892719A | Writing instruments | |
| CA892720A | Writing instruments |