| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | Belgium | 1 | |
| #3 | Germany | 1 | |
| #4 | Denmark | 1 | |
| #5 | France | 1 | |
| #6 | Ireland | 1 | |
| #7 | Italy | 1 | |
| #8 | Netherlands | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Pipes | |
| #3 | Earth drilling | |
| #4 | Nails | |
| #5 | Scaffolding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doody J P | 4 |
| #2 | Thomas N S | 3 |
| #3 | Smith C R | 3 |
| #4 | Smith Christopher Richard Grad | 2 |
| #5 | Thomas Norman Stanley | 2 |
| #6 | Doody John Philip | 1 |
| #7 | Street T R | 1 |
| #8 | Forrester Charles William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8609041D0 | Pipe joints | |
| GB8427155D0 | Joining of concrete bodies | |
| GB8401209D0 | Joining concrete members | |
| GB8331404D0 | Handling devices | |
| GB2132249A | Tunnel linings | |
| GB2113276A | Method of connecting together concrete segments to form an annulus for a tunnel lining | |
| GB2055413A | Tunnel segments | |
| US4104885A | Tunnel lining |