| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | United Kingdom | 7 | |
| #3 | United States | 2 | |
| #4 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Civil engineering | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Machines for making railways | |
| #3 | Springs | |
| #4 | Vehicle connections | |
| #5 | Belts or cables for driving | |
| #6 | Couplings | |
| #7 | Household appliances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rudolf Rafflenbeul | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2044446A | Rail fastening | |
| GB424558A | Improved means for fastening railway rails | |
| GB351879A | Improvements in or relating to driving chains | |
| GB321614A | Improved locking nut | |
| GB308531A | Improvements in or relating to spring washers | |
| US1731149A | Shock absorber for vehicle couplings | |
| GB286231A | Improvements in or relating to shock absorbers | |
| GB287129A | Improved helical springs | |
| GB265736A | Improvements in spring washers used for locking nuts |