| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | United States | 5 | |
| #3 | Germany | 1 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Textiles and paper | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Stamps | |
| #3 | Hairstyling and cosmetic | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lofgren Charles W | 3 |
| #2 | Degroft Walter J | 3 |
| #3 | Jensen Theodore E | 2 |
| #4 | De Groft Walter J | 2 |
| #5 | W Lofgren Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3345674A | Marking device | |
| US3326180A | Stamp pad and reserve ink supply therefor | |
| US3231924A | Marking device | |
| US3137886A | Cap device for ball-type fluid dispenser | |
| US3263394A | Apparatus for and methods of making a marking device | |
| CA801314A | Marking device | |
| CA740590A | Cap device for ball-type fluid dispenser | |
| CA783864A | Apparatus for and methods of making a marking device | |
| CA821156A | Marking device | |
| CA728940A | Ink cartridge and spacer device |