April 1920 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 1920
UNION BAEROLINA B S
Filed: April 30, 1920
FILTER MASS
Owned by: LUDWIG BAER
Serial Number: 71131851
AERZONATOR
Filed: April 30, 1920
Deodorizing Devices
Owned by: Sterling Drug, Inc.
Serial Number: 71131893
BUZZER
Filed: April 7, 1920
Gas Soldering-Furnaces, Soft-Metal Furnaces, Burners, and Torches
Owned by: Charles A. Hones, Inc.
Serial Number: 71130759
