| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 30 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Telecommunications | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Electromechanical clocks | |
| #2 | Measuring speed and acceleration | |
| #3 | Telephonic communication | |
| #4 | Selecting | |
| #5 | Unspecified technologies | |
| #6 | Nails | |
| #7 | Measuring distances | |
| #8 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Poole Arthur F | 31 |
| #2 | Hall Frank B | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1937529A | Electric clock | |
| US1920479A | Recording meter | |
| US1928794A | System for indicating time | |
| US1928793A | System and method for indicating time | |
| US1531026A | Combined clock and speedometer | |
| US1387555A | Aeroplane speed-indicator | |
| US1422224A | Speed indicator for aeorplanes | |
| US1310375A | Clock system. | |
| US1328247A | Electric-clock system | |
| US1325862A | Electric clock. | |
| US1351585A | Speedometer | |
| US1249189A | Speedometer. | |
| US1271763A | Toggle-bolt. | |
| US1310374A | Electric-clock system. | |
| US1310372A | Electric-clock system. | |
| US1110143A | Speedometer. | |
| US1176690A | Odometer. | |
| US1158281A | Speedometer. | |
| US1003502A | Frequency-meter. | |
| US878018A | Lock-out telephone system. |