| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 22 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 2 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Control | |
| #3 | Medical technology | |
| #4 | Textiles and paper | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Processing photographic materials | |
| #3 | Alarm systems | |
| #4 | Photosensitive materials | |
| #5 | Venting or aerating devices | |
| #6 | Syringes | |
| #7 | Paper-making machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dupuis Charles | 22 |
| #2 | Charles Dupuis | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1787341A | White-water system for reclaiming white water or any fiber | |
| US1727161A | Gate valve | |
| GB291436A | An electric call apparatus | |
| GB194704A | Improvements in apparatus for hypodermic injections of oxygen or other gases |