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| All Patents in class 141/209 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,851,065 | Sep. 09, 1958 | D.L. Billian, R.V. Klikunas | Automatic tank filling nozzle | ||
| 3,025,893 | Mar. 20, 1962 | L.A. Botkin | Liquid level detector | ||
| 3,062,247 | Nov. 06, 1962 | L.A. Botkin | Automatic dispensing nozzle | ||
| 3,075,563 | Jan. 29, 1963 | L.A. Botkin | Automatic chemical handling nozzle | ||