| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 36 | |
| #2 | United Kingdom | 3 | |
| #3 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Filing and indexing | |
| #2 | Unspecified technologies | |
| #3 | Perforating | |
| #4 | Unspecified technologies | |
| #5 | Office furniture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emil Kern | 15 |
| #2 | Zwickel Elmer L | 12 |
| #3 | Kline Fred J | 6 |
| #4 | Ashley Charles H | 1 |
| #5 | Meyer Howard G | 1 |
| #6 | White Gerard D | 1 |
| #7 | Mcglade George B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2764240A | Perforating devices | |
| US2405150A | Perforating device | |
| US2429422A | File folder | |
| US2389105A | Multiple perforator | |
| US2339412A | Fastener | |
| US2329869A | Fastener | |
| US2329870A | Fastener | |
| US2359892A | Fastener | |
| US2336061A | Filing device | |
| US2333615A | Filing device | |
| US2339447A | Filing equipment | |
| US2314121A | Filing equipment | |
| US2337393A | Filing equipment | |
| US2292226A | Fastener | |
| US2292225A | Fastener | |
| US2319438A | Fastening device | |
| US2323448A | Filing equipment | |
| US2274203A | Filing equipment | |
| US2252402A | Filing equipment | |
| US2253712A | Fastener |