| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 27 | |
| #2 | Switzerland | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | Austria | 3 | |
| #5 | Finland | 2 | |
| #6 | Canada | 1 | |
| #7 | Germany | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Construction of bridges | |
| #3 | Shafts | |
| #4 | Scaffolding | |
| #5 | Construction of roads | |
| #6 | Hydraulic engineering | |
| #7 | Swimming pools | |
| #8 | Unspecified technologies | |
| #9 | Foundations and excavations | |
| #10 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rene Grevent | 2 |
| #2 | Pigeot Robert-Auguste | 2 |
| #3 | Jean Muller | 2 |
| #4 | Grevent | 2 |
| #5 | Pigeot Robert A | 1 |
| #6 | Conversy Francois-Leon | 1 |
| #7 | Chaudesaigues Jean Emile Pierr | 1 |
| #8 | Auguste Pigeot Robert | 1 |
| #9 | Freyssinet Eugene | 1 |
| #10 | Favre Roland | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1166307A | Process for the Production of Prefabricated Cast Elements. | |
| GB1042068A | Improvements in or relating to bridges and to methods and apparatus for the construction thereof, particularly large multiple bay maritime bridges | |
| GB875092A | Closing means for subterranean localities | |
| US3056183A | Process for the production of lined prestressed concrete hollow bodies | |
| DE706171C | Process for the construction of galleries, tunnels or underground channels | |
| CA671858A | Pipes and bodies of prestressed concrete and method of manufacturing the same |