| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Mechanically-driven clocks | |
| #2 | Unspecified technologies | |
| #3 | Electromechanical clocks | |
| #4 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carlson Elof L | 9 |
| #2 | Simpson John O | 3 |
| #3 | Large William J | 1 |
| #4 | Ingraham Dudley S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1832359A | Demountable clock | |
| US1856389A | Wrist-watch case | |
| US1802334A | Electric clock | |
| US1802333A | Electric clock | |
| US1744524A | Alarm clock | |
| US1818690A | Pawl for ratchet-mechanisms | |
| US1860353A | Nickel clock | |
| US1785267A | Regulator for clock movements | |
| US1772798A | Spring pawl for ratchet mechanisms | |
| US1785231A | Metal base for nickel clocks | |
| US1858262A | Sheet-metal bezel for unbreakable clock-crystals | |
| US1695087A | Method of producing gong stands for clocks |