| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 38 | |
| #2 | United States | 10 | |
| #3 | Switzerland | 5 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Austria | 1 |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Optical systems | |
| #3 | Unspecified technologies | |
| #4 | Coin-freed |
| # | Name | Total Patents |
|---|---|---|
| #1 | Karl Nuchterlein | 8 |
| #2 | Steenbergen Co Ihagee-Kamerawe | 4 |
| #3 | Koehl Konrad | 3 |
| #4 | Konrad Koehl | 2 |
| #5 | Nuechterlein Karl | 2 |
| #6 | Steenbergen Co Ihagee Kamerawe | 1 |
| #7 | Meyer Kurt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE715173C | Storage container for slide frames | |
| DE707146C | 35mm camera | |
| US2252513A | Rotatable projection assembly | |
| DE687921C | Enlarger | |
| DE683238C | Reflex camera with electric light meter | |
| US2243160A | Projection apparatus | |
| DE705754C | Stereo roll film camera | |
| US2266656A | Indicator for cameras | |
| US2147106A | Roll film cushion | |
| DE680348C | Suitcase imaging device | |
| US2136149A | Lens mount | |
| US2165903A | Reflex camera | |
| US2180064A | Camera | |
| US2136148A | Reflex camera | |
| GB483053A | Improvements in or relating to photographic shutters of the pivoted-blade-between-lens type | |
| US2096856A | Photographic lamp | |
| DE646375C | Central photographic shutter with a built-in drive that regulates exposure and waiting time | |
| US2025609A | Reflex camera | |
| DE647226C | Reflex camera | |
| DE634353C | Focal plane shutter camera with time drive |