June 1921 Nonmetallic building materials Trademarks by day
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 29 | 30 |
Nonmetallic building materials Trademarks filed in June 1921
RUST
Filed: June 29, 1921
BRICK AND CONCRETE CHIMNEYS AND BRICK SETTINGS FOR BOILERS-I.E., BRICK SUPPORTING WALLS FOR BOILERS
Owned by: RUST ENGINEERING COMPANY, THE
Serial Number: 71149820
PYRO
Filed: June 9, 1921
REFRACTORY MATERIALS-NAMELY, FIRE BRICK AND REFRACTORY CEMENT
Owned by: PYRO CLAY PRODUCTS COMPANY, THE
Serial Number: 71148891
