trademarks were found for owners matching the name National Quartet Convention, Inc..| # | Class | status | |
|---|---|---|---|
| 1 |
S:77076873
M:AMERICAN GOSPEL MUSIC 
O:National Quartet Convention, Inc. |
9 | Dead |
| 2 |
S:76659453
M:AMERICAN GOSPEL MUSIC O:National Quartet Convention, Inc. |
16 | Dead |
| 3 |
S:76659454
M:AMERICAN GOSPEL MUSIC O:National Quartet Convention, Inc. |
41 | Dead |
| 4 |
S:76659455
M:AMERICAN GOSPEL MUSIC O:National Quartet Convention, Inc. |
9 | Dead |
| 5 |
S:74440710
M:NQC NATIONAL QUARTET CONVENTION 
O:National Quartet Convention, Inc. |
41, 42 | Dead |
