| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 4 | |
| #3 | Germany | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Textiles and paper | |
| #3 | Machines | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Photomechanical semiconductor production | |
| #2 | Printing plates | |
| #3 | Unspecified technologies | |
| #4 | Photosensitive materials | |
| #5 | Metal-working | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Huggins Owen R | 2 |
| #2 | Boedicker Herman C | 1 |
| #3 | Misuraca William N | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB513793A | Improvements in and relating to photography | |
| GB498263A | A method of producing an etched intaglio printing surface and the product thereof | |
| DE749697C | Method of making used printing rollers recyclable | |
| US2143984A | Method of and means for engraving a printing surface | |
| US2117722A | Printing cylinder | |
| US2100346A | Intaglio printing elements and method of producing the same | |
| US1945676A | Process of producing printing surfaces |