| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 9 | |
| #2 | Spain | 7 | |
| #3 | Switzerland | 6 | |
| #4 | United Kingdom | 4 | |
| #5 | Canada | 1 | |
| #6 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Making forged metal products | |
| #2 | Forging | |
| #3 | Thread cutting | |
| #4 | Vehicle air-treating devices | |
| #5 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fries Alfred De | 17 |
| #2 | Alfred De Fries | 3 |
| #3 | De Fries Alfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES110157A1 | A windbreaker for cars. | |
| GB191325529A | Apparatus for Finishing Bolt-heads and the like. | |
| GB191114671A | Improved Process of Manufacturing Nuts in a Cold State. | |
| GB191020484A | Improved Process of and Machine for Manufacturing Screw Bolts. | |
| GB190926113A | Process for Finishing the Lateral Surfaces of Short, Round, Square or Polygonal Articles, such as Nuts and the Heads of Screws, Bolts, Spikes and the like. | |
| CA289738A | Vehicle draught screen |