| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | Austria | 3 | |
| #3 | Canada | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Froese Herbert | 12 |
| #2 | Herbert Froese | 1 |
| #3 | Lorenzen Johannes F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3136463A | Attachment for microfilm flow type cameras | |
| FR1285082A | Control device for continuous-scrolling microfilm cameras with several interchangeable lenses intended for photographing documents | |
| FR1285083A | Auxiliary device for continuous scrolling cameras for microfilm | |
| GB926395A | A microfilm flow camera | |
| GB926416A | Improvements in microfilm cameras | |
| CA668677A | Attachment for microfilm flow type cameras | |
| CA668678A | Switching mechanism for microfilm flow type cameras |