| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 6 | |
| #3 | United Kingdom | 3 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machine tools | |
| #3 | Packaging and shipping | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Printing machines | |
| #2 | Unspecified technologies | |
| #3 | Cutting | |
| #4 | Gearing | |
| #5 | Copy machines | |
| #6 | Sawing | |
| #7 | Handling thin material |
| # | Name | Total Patents |
|---|---|---|
| #1 | Huffman Louis | 17 |
| #2 | Densem John Arthur | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA193054A | Knob lock | |
| CA193618A | Knob lock | |
| CA154137A | Variable speed mechanism | |
| GB191300388A | Improvements in Variable Speed Mechanism. | |
| US1107613A | Variable-speed mechanism. | |
| US1018617A | Impression apparatus. | |
| CA131365A | Impression apparatus | |
| GB190912980A | Improvements in Printing Machines. | |
| US938381A | Impression apparatus. | |
| US946224A | Impression apparatus. | |
| GB190216725A | Improvements in Duplicating Books. | |
| US712681A | Duplicating-book. | |
| CA76529A | Duplicating book | |
| CA77516A | Machine for coating paper with a transfer composition | |
| CA202206A | Knob lock | |
| US1139528A | Web-cutting mechanism |