| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Measurement | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Ticket-issuing devices | |
| #2 | Books | |
| #3 | Measuring speed and acceleration |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ohmer John Francis | 11 |
| #2 | Bridenbaugh Elmer Henry | 1 |
| #3 | Ohmer Frederick Ewis | 1 |
| #4 | John Francis Ohmer | 1 |
| #5 | Ohmer Frederick Lewis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB261291A | Taximeters | |
| GB147721A | Improvements in apparatus for disabling and recording use of motor vehicles | |
| GB147722A | Improvements in apparatus for disabling and recording use of motor vehicles | |
| AU245705B | Improvements in ticket-issuing and recording machines |