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| All Patents in class 200/19.06 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,371,972 | Mar. 15, 1921 | E.B. Jacobson | Ignition Timer | ignition systems | |
| 2,650,961 | Sep. 01, 1953 | I.A. Weaver | Pickup Device for Use with Balance Testing Machines | balancing machinery | |