| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Telecommunications | |
| #5 | Consumer goods | |
| #6 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Measuring force, work and fluid pressure | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Special measuring | |
| #5 | Broadcast communication | |
| #6 | Springs | |
| #7 | Pipe-line systems | |
| #8 | Horticulture | |
| #9 | Sound-producing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Motherwell Joseph W | 8 |
| #2 | Baker Harry S | 5 |
| #3 | Casey Frederick A | 4 |
| #4 | Cutler Arthur E | 3 |
| #5 | Bosworth Charles B | 2 |
| #6 | Priest Walter F | 1 |
| #7 | Hudson William S | 1 |
| #8 | Hedeman Walter R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2137972A | Illuminated gauge | |
| US1976938A | Pressure gauge | |
| US2040681A | Gauge | |
| US2001375A | Pop safety valve | |
| US1915942A | Illuminated gauge | |
| US2034222A | Valve | |
| US1814092A | Pressure gauge | |
| US1933383A | Gauge | |
| US1621738A | Retard device | |
| US1639965A | Alarm gauge | |
| US1663313A | Adjusting mechanism for pressure gauges | |
| US1734977A | Pressure gauge | |
| US1480684A | Spring link | |
| US1416794A | Pressure gauge | |
| US1063281A | Recording-gage. | |
| US1066079A | Signal for trains. | |
| US921360A | Safety-valve. | |
| CA84776A | Safety valve | |
| US716864A | Safety-valve. | |
| US664806A | Testing apparatus for pressure-gages. |