| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Italy | 3 | |
| #3 | United States | 3 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Brazil | 1 | |
| #6 | Czechia | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Hungary | 1 |
| # | Industry | |
|---|---|---|
| #1 | Weapons | |
| #2 | Machine tools | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Pistols and rifles | |
| #2 | Mountings for cannons and pistols | |
| #3 | Hand-held cutting tools | |
| #4 | Stamps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wiethoff Guenter | 10 |
| #2 | Wiethoff Gunter | 5 |
| #3 | Melcher Cuno | 1 |
| #4 | Gunter Wiethoff | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9617382D0 | Throwing dart | |
| FR2736711A1 | Drum revolver with unrotatable drum part | |
| EP0664432A2 | Signal pistol with a tubular magazine. | |
| EP0439717A2 | Signalling pistol for flares | |
| DE3136325A1 | FOLDING KNIFE | |
| US4123866A | Muzzle-loading handgun | |
| DE2553445A1 | Printing stamp with hand grip - has facial image on printing surface and name of person depicted | |
| DE2451270A1 | Revolver with sliding barrel - has circular cavity in shell drum accommodating barrel rear end | |
| US3955301A | Quick-load handgun | |
| DE2405932A1 | Small firearm espec starting and signalling revolver - has detachable drum shaped magazine for actual drum | |
| DE2060712A1 | Handgun |