| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | United States | 5 | |
| #3 | Belgium | 2 | |
| #4 | Switzerland | 2 | |
| #5 | France | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Australia | 1 | |
| #8 | Italy | 1 | |
| #9 | Netherlands | 1 | |
| #10 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Computer technology | |
| #3 | Measurement | |
| #4 | Control | |
| #5 | Chemical engineering | |
| #6 | Packaging and shipping | |
| #7 | Foods and drinks | |
| #8 | Consumer goods | |
| #9 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Fluid-circuit elements for computing | |
| #3 | Measuring volume | |
| #4 | Systems controlling non-electric variables | |
| #5 | Mixing | |
| #6 | Unspecified technologies | |
| #7 | Transferring liquids | |
| #8 | Swimming pools | |
| #9 | Cocoa and sweets | |
| #10 | Ice-boxes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richards George B | 7 |
| #2 | Richards G | 5 |
| #3 | Richards G B | 2 |
| #4 | Georg B Richards | 1 |
| #5 | George Burge Richards | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4211249A | Liquid level control system | |
| US4148334A | Liquid level control sytem | |
| US4028441A | Liquid level control system and carbonator | |
| CA1001592A | Liquid level control system | |
| CA978907A | Liquid level control system | |
| CA963680A | Liquid level control system and carbonator | |
| US3788090A | Fluid control systems | |
| CA936806A | Fluid amplifiers | |
| US3730500A | Liquid level control system and carbonator |