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All Patents in class 222/558 | |||||
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Number | Title | Classification(s) | |||
1,366,334 | Discharge Gate for Storage Receptacles | 222/505, 222/558, 222/566, 251/300 | |||
1,705,885 | Automatic Feeder | 222/437, 222/448, 222/450, 222/532, 222/558, 414/615 | |||
2,284,781 | Hopper | 105/284, 222/503, 222/504, 222/505, 222/558, 251/129.11 |