June 1940 Environmental control apparatus Trademarks by day
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
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| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
Environmental control apparatus Trademarks filed in June 1940
KOOLITE
Filed: June 17, 1940
Gas Blowpipes and Handles and Bases Therefor
Owned by: Veriflo Corporation
Serial Number: 71433104
