| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 10 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Germany | 2 | |
| #4 | Hong Kong | 2 | |
| #5 | United Kingdom | 1 | |
| #6 | Japan | 1 | |
| #7 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Ladders | |
| #2 | Nails | |
| #3 | Hydraulic engineering | |
| #4 | General building constructions | |
| #5 | Foundations and excavations | |
| #6 | Cranes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bergdoll Marcel | 8 |
| #2 | Sonntag Conrad | 4 |
| #3 | Marcel Bergdoll | 2 |
| #4 | Berugudooru Maruseru | 1 |
| #5 | Bergdoll Marcell | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19527318A1 | Lifting device for a dam beam | |
| FR2682427A1 | Sliding ladder. | |
| FR2664939A1 | Tubular step to be anchored in soft concrete. | |
| FR2664940A1 | Device for fixing tubular rungs | |
| FR2635798A1 | WATERCOURSE DAM AND, PARTICULARLY, A Cofferdam | |
| FR2601054A1 | Dam for watercourse | |
| FR2599422A1 | Sliding ladder for central access chimney chamber. | |
| FR2588912A1 | Sealing step and fastening method |