trademarks were found for owners matching the name Principal Engineering, Inc..| # | Class | status | |
|---|---|---|---|
| 1 |
S:86102868
M:PRINCIPAL INFRASTRUCTURE 
O:Principal Engineering, Inc. |
37, 42 | Registered |
| 2 |
S:86102886
M:PRINCIPAL INFRASTRUCTURE O:Principal Engineering, Inc. |
37, 42 | Registered |
| 3 |
S:86100753
M:PRINCIPAL ARCHITECTURE 
O:Principal Engineering, Inc. |
37, 42 | Registered |
| 4 |
S:86100822
M:PRINCIPAL CONSTRUCTION 
O:Principal Engineering, Inc. |
37 | Registered |
| 5 |
S:85937160
M:PRINCIPAL ENGINEERING 
O:Principal Engineering, Inc. |
42 | Registered |
| 6 |
S:85000637
M:PRINCIPAL ENGINEERING O:PRINCIPAL ENGINEERING, INC., PRINCIPAL INFRASTRUCTURE GROUP, INC., The Principal Group, Inc. |
42 | Registered |
