| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Belgium | 3 | |
| #3 | Canada | 3 | |
| #4 | France | 3 | |
| #5 | Germany | 2 | |
| #6 | Austria | 1 | |
| #7 | Switzerland | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Ireland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Packaging and shipping | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Transferring liquids | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Unspecified technologies | |
| #5 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stevens Jun Frederick Fields | 2 |
| #2 | Stevens F F | 2 |
| #3 | Stevens Frederick F Jr | 2 |
| #4 | Stevens F | 2 |
| #5 | Stevens Jr Frederick F | 2 |
| #6 | Stevens Frederick F | 1 |
| #7 | Frey John A | 1 |
| #8 | Frederick Fields Stevens | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4436228A | Keg tapping apparatus having improved retainer | |
| US3918680A | Stopcock | |
| US3933282A | Universal tavern unit for keg tapping device | |
| US3843172A | Keg tapping device having improved sealing means | |
| US3741248A | Rotary selector valve mechanism | |
| IE34400B1 | Check valve | |
| US3618632A | Check valve |