| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 4 | |
| #2 | Argentina | 1 | |
| #3 | Czechoslovakia | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | Poland | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Platform constructions | |
| #3 | Foundations and excavations | |
| #4 | General building constructions | |
| #5 | Swimming pools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Quartel Cornelis | 4 |
| #2 | Rijken Adrianus | 4 |
| #3 | Bennenk Hendrik Willem | 3 |
| #4 | Bennenk Hendrik W | 1 |
| #5 | Bennonk Hendrik Willem | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL9002531A | Apparatus for the production of prestressed concrete sleepers for railway tracks, as well as sleepers manufactured using this apparatus. | |
| FI902352A0 | Ljudabsorberande vaegg. | |
| NL8802808A | Sound absorbing wall. | |
| NL8600343A | Moulded concrete manure silo - is in prefabricated dish sections forming spheroidal body with clamping ropes | |
| NL8204230A | Building construction system on piles - places wall on pile heads before installation without using foundation beam |