April 1919 Environmental control apparatus 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 |
Environmental control apparatus Trademarks filed in April 1919
FRIGIDAIRE
Filed: April 28, 1919
ALLOY IRON ROLLS FOR USE IN ROLLING MILLS OF ALL SORTS
Owned by: FRIGIDAIRE CORPORATION
Serial Number: 71117931
UNIVENT
Filed: April 26, 1919
HEATING AND VENTILATING APPARATUS, COMPRISING A CABINET CONTAINING A RADIATOR AND CIRCULATING-FANS
Owned by: AMERICAN AIR FILTER COMPANY, INC.
Serial Number: 71117888
