| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 3 | |
| #3 | France | 2 | |
| #4 | Austria | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Machine tools | |
| #5 | Mechanical elements | |
| #6 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crocker Ernest B | 14 |
| #2 | Blanchard Frederick C | 12 |
| #3 | Blanchard Frederick Chambers | 2 |
| #4 | Houghtaling William | 1 |
| #5 | Keefer Philip S | 1 |
| #6 | Eddy Howard E | 1 |
| #7 | Edson Jarvis Bonesteel | 1 |
| #8 | Darling Philip G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1346941A | Pressure-gage | |
| US1290520A | Safety-valve-testing gag. | |
| US1370193A | Hydrostatic circuit-closer | |
| US1375366A | Pressure-gage | |
| US1210891A | Pressure-reducing valve. | |
| US1162982A | Device for damping pressure fluctuations. | |
| US1130803A | Releasing device. | |
| GB191218672A | Improvements in Apparatus for Testing Paper and like Fabrics. | |
| US1048488A | Paper-testing device. | |
| US1030967A | Gas-regulator. | |
| CA139442A | Gauge | |
| CA136493A | Grinder for valves, etc. | |
| US980403A | Gage-movement. | |
| US978833A | Gage. | |
| US987039A | Gage-movement. | |
| US963986A | Combination drill and valve-grinder. | |
| US949993A | Piston. | |
| US959702A | Pipe-union. | |
| US961836A | Planimeter. | |
| US940379A | Frame for gage-movements. |