| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 29 | |
| #2 | United Kingdom | 5 | |
| #3 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Textiles and paper | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines | |
| #5 | Thermal processes | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Handling thin material | |
| #2 | Printing machines | |
| #3 | Rotary-pistons | |
| #4 | Copy machines | |
| #5 | Printing plates | |
| #6 | Vehicle servicing | |
| #7 | Refrigerators | |
| #8 | Transport or storage devices | |
| #9 | Unspecified technologies | |
| #10 | Typewriters |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ward Davidson William | 17 |
| #2 | Davidson Jr William Ward | 4 |
| #3 | Dell Edward F | 4 |
| #4 | Breman Frank J | 3 |
| #5 | Nils Trydal | 3 |
| #6 | Wishart William W | 2 |
| #7 | Davidson William Ward | 2 |
| #8 | Frank Dell Edward | 2 |
| #9 | Brown Jr Robert C | 1 |
| #10 | Hagelin William T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB652907A | Improvements in or relating to printing presses | |
| US2516757A | Dampening fountain for printing presses | |
| US2491090A | Printing plate | |
| US2386442A | Typewriter | |
| US2436765A | Gripper mechanism for printing presses | |
| US2479060A | Collator | |
| US2427839A | Collator | |
| US2427904A | Printing press | |
| US2406205A | Printing press | |
| US2412132A | Printing press | |
| US2387750A | Printing press | |
| US2358284A | Printing press | |
| US2314438A | Storage tank and compressor assembly | |
| US2344510A | Planographic plate | |
| US2309161A | Plate clamp | |
| US2249504A | Conveyer board | |
| GB530970A | Improvements in folding machines | |
| GB530676A | Improvements in or relating to conveyors | |
| US2224138A | Friction feeder | |
| US2261913A | Printing press |