| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 | |
| #3 | Germany | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Medical technology | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Dentistry | |
| #2 | Unspecified technologies | |
| #3 | Labelling machines | |
| #4 | Advertising | |
| #5 | Elevators and escalators | |
| #6 | Venting or aerating devices | |
| #7 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Levy Dudley D | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2215222A | Dental tool holder | |
| US2093682A | Dental tool holder | |
| DE574586C | Dental impact tool | |
| US1915370A | Tool coupling | |
| US1925101A | Shock absorbing mechanism | |
| US1852426A | Seal or tag affixing machine | |
| US1859780A | Latch for dumb-waiter doors | |
| US1847841A | Machine for affixing identification seals or tags | |
| US1836258A | Identification seal | |
| US1817571A | Dental tool | |
| US1808143A | Vacuum tank | |
| CA323261A | Identification seal | |
| CA323262A | Dental instrument |