| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Australia | 2 | |
| #3 | Canada | 2 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Loudspeakers and microphones | |
| #3 | Measuring force, work and fluid pressure |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kuehn John P | 4 |
| #2 | Pritchard Peter E | 2 |
| #3 | Kurtin Stephen L | 2 |
| #4 | Park Eric D | 2 |
| #5 | Chivens Donald R | 2 |
| Publication | Filing date | Title |
|---|---|---|
| AU8170982A | Variable compliance phono cartridge | |
| US4395920A | Digital stylus force gauge | |
| US4340957A | Cartridge and headshell assembly | |
| US4325132A | Unitary phonograph cartridge and head assembly | |
| US4165078A | Flip-up stylus protector for a phonograph cartridge | |
| US3294405A | Phonograph pick-up | |
| CA764041A | Phonograph pick-up |