| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 12 | |
| #2 | United Kingdom | 5 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Control | |
| #5 | Engines, pumps and turbines | |
| #6 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hugo Allemann | 9 |
| #2 | Allemann Ag Hugo | 4 |
| #3 | Johann Ehe | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CH376298A | Valve arrangement for regulating the pressure of gases or liquids in a container | |
| GB856432A | Improvements in and relating to apparatus for producing the axial grinding spindle movement in internal grinding appliances | |
| US2784430A | Tool spindle rotated in alternate directions by means of reciprocating rack and pinion drive | |
| GB698015A | Improvements in and relating to machine tapping |