| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 12 | |
| #2 | Germany | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Bolts for doors or windows | |
| #5 | Indexing scheme relating to hinges | |
| #6 | Vehicle windows, roofs and doors | |
| #7 | Wing fittings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Raymond Petit | 2 |
| #2 | Petit Raymond | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE469451C | Device for non-reversible rotation transmission |