| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Denmark | 2 | |
| #3 | Greece | 2 | |
| #4 | Norway | 2 | |
| #5 | South Africa | 2 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Finland | 1 | |
| #8 | Hong Kong | 1 | |
| #9 | New Zealand | 1 | |
| #10 | Philippines | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Domestic plumbing installations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Drummond Desmond Charles | 6 |
| #2 | Hough William C Jr | 6 |
| #3 | Hough W C | 2 |
| #4 | William Hough C | 1 |
| #5 | Hough Jr William C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK367685A | Clamp | |
| PH23154A | Article clamp | |
| ZA8409786B | Apparatus for use in unblocking waste outlets and the like | |
| NZ210546A | Adjustable clamp including clamping section at hinge end |