October 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 October 1920
AIRCO
Filed: October 14, 1920
Oxyacetylene Welding and Cutting Apparatus
Owned by: BOC GROUP, INC., THE
Serial Number: 71138272
HOT-FLOW
Filed: October 2, 1920
WATER-PURIFICATION APPARATUS COMPRISING SYSTEMS OF SETTLING TANKS, CHEMICAL TANKS, FILTERS AND HEATERS
Owned by: INTERNATIONAL FILTER CO.
Serial Number: 71137834
