| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 8 | |
| #2 | Germany | 7 | |
| #3 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Optics | |
| #3 | Furniture and games | |
| #4 | Chemical engineering | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Optical systems | |
| #3 | Cameras | |
| #4 | Measuring volume | |
| #5 | Office furniture | |
| #6 | Domestic washing | |
| #7 | Unspecified technologies | |
| #8 | Chemical or physical laboratory devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Weiskopf Edwin Carl | 9 |
| #2 | Edwin Carl Weiskopf | 8 |
| #3 | Edwin C Whitehead | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE849176C | Cabinet for storing microscope slides and similar objects | |
| CA485395A | Multiple lamp apparatus | |
| CA479062A | Holders for microscope slides |