| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Canada | 1 | |
| #3 | Germany | 1 | |
| #4 | Denmark | 1 | |
| #5 | Egypt | 1 | |
| #6 | France | 1 | |
| #7 | Sweden | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | General building constructions | |
| #3 | Structural elements | |
| #4 | Machines for making railways | |
| #5 | Containers for goods storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Devonport D | 3 |
| #2 | Devonport Derek K | 2 |
| #3 | Devonport Derek Kenneth | 2 |
| #4 | Kenneth Devonport Derek | 1 |
| #5 | Devonport Dzrek Kenneth | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EG13328A | Improvement in and relating to precast reinforced concrete | |
| GB1163538A | Improvements in and relating to precast reinforced concrete beams | |
| GB1163537A | Improvements in and relating to precast reinforced, concrete structural members | |
| GB131735A | Improvements in or relating to Silos. | |
| GB123162A | Improvements in or relating to Concrete Railway Sleepers. | |
| CA909539A | Precast, reinforced concrete structural members |