| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Money sorting | |
| #2 | Coin-freed | |
| #3 | Unspecified technologies | |
| #4 | Locks | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nielsen Helmer B | 9 |
| #2 | Lederer George H | 1 |
| #3 | B Nielsen Helmer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA858353A | Coin dispensing device | |
| US3323627A | Apparatus for sorting coins | |
| US3337125A | Coin escrow device | |
| US3144688A | Draught excluder | |
| CA704387A | Book match feeder | |
| CA750719A | Apparatus for sorting coins | |
| CA796993A | Coin escrow device | |
| CA785558A | Colour coding for filing systems | |
| CA654883A | Draught excluder | |
| CA709692A | Coin sorting device |