| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 24 | |
| #2 | Canada | 2 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Textiles and paper | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frank Walter N | 6 |
| #2 | Carter Alick L | 5 |
| #3 | Reuben Hill | 3 |
| #4 | Adams William S | 3 |
| #5 | Rippingille Edward V | 3 |
| #6 | Frank Walter Nelson | 2 |
| #7 | Toulmin Jr Harry A | 2 |
| #8 | Croninger Lorenzo D | 1 |
| #9 | Filbert Harry M | 1 |
| #10 | Collison John G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1710872A | Indicator | |
| US1676330A | Valve | |
| US1630007A | Temperature indicator | |
| US1658235A | Liquid-level gauge | |
| US1607736A | Liquid-level gauge | |
| GB242933A | Improvements in or relating to liquid level gauges | |
| GB228875A | Improvements in or relating to liquid level gauges | |
| US1647342A | Diaphragm pressure gauge | |
| US1630029A | Liquid-level indicator | |
| US1639341A | Gasoline gauge | |
| US1630000A | Liquid-level gauge | |
| US1607751A | Liquid-level gauge | |
| US1607750A | Liquid-level indicator | |
| US1652761A | Liquid-level gauge | |
| US1607714A | Pressure gauge | |
| US1585884A | Fluid gauge | |
| US1607716A | Fluid gauge | |
| US1645800A | Liquid-level gauge | |
| US1527430A | Gauge | |
| US1589510A | Liquid gauge |