| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | Australia | 3 | |
| #5 | Italy | 3 | |
| #6 | Sweden | 3 | |
| #7 | United States | 3 | |
| #8 | South Africa | 3 | |
| #9 | Netherlands | 2 | |
| #10 | Denmark | 1 | |
| #11 | Spain | 1 | |
| #12 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Vehicle parts | |
| #2 | Springs | |
| #3 | Platform constructions | |
| #4 | Construction of bridges |
| # | Name | Total Patents |
|---|---|---|
| #1 | Persicke G | 8 |
| #2 | Persicke Gunter | 6 |
| #3 | Child James Richard | 2 |
| #4 | Child J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4079924A | Shock absorber | |
| AU7098474A | Crash barriers | |
| GB1500514A | Shock absorber | |
| GB1478849A | Shock absorbing apparatus | |
| GB1455847A | Shock absorbers | |
| GB1417109A | Traffic guard rails |