| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 | |
| #2 | Germany | 5 | |
| #3 | Canada | 4 | |
| #4 | Australia | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Ireland | 1 | |
| #7 | USSR (Union of Socialist Soviet Republics) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Thermal processes | |
| #4 | Measurement | |
| #5 | Packaging and shipping | |
| #6 | Machine tools | |
| #7 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Valentine Fina | 6 |
| #2 | Fraser Jr John | 4 |
| #3 | Hoelzer William F | 3 |
| #4 | Robinson Bernie E | 3 |
| #5 | Heil Richard J | 2 |
| #6 | Robinson Daniel Townie | 2 |
| #7 | Johnson Henry L | 2 |
| #8 | Miller Frank J | 1 |
| #9 | Koenigsberg Max | 1 |
| #10 | Robinson Bernie Eugene | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4526194A | Tamper-proof valve | |
| US4518008A | Quarter turn valve including supervisory switch assembly | |
| IE820822L | Tamper-proof valve | |
| CA1084476A | Butterfly valve and method of making same | |
| GB1315709A | Gauging systems | |
| US2693816A | Hydrant valve | |
| US2680030A | Nozzle | |
| US2271151A | Gasoline nozzle | |
| US1960963A | Valve mechanism | |
| US1980914A | Relief by-passed gate valve | |
| US1960970A | Valve mechanism | |
| US2063442A | Lock valve | |
| US1964509A | Valve | |
| US1840441A | Drip trap | |
| US1835035A | Return trap | |
| US1827573A | Receptacle closure | |
| US1776936A | Valve | |
| US1906052A | Boiler return trap | |
| US1675172A | Valve | |
| US1689236A | Valve structure |