| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 4 | |
| #2 | France | 4 | |
| #3 | United Kingdom | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Civil engineering | |
| #3 | Macromolecular chemistry and polymers |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Construction of roads | |
| #3 | Macromolecular compounds compositions |
| Publication | Filing date | Title |
|---|---|---|
| GB415061A | Improvements in the process of treating blocks of artificial stone with steam and hot air, and in apparatus therefor | |
| GB400477A | Improvements in or relating to road paving and like blocks | |
| GB395288A | Improvements in road paving | |
| DE619973C | Process for the production of a filling compound for the joints left between bituminous moldings during the production of road surfaces |