Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B67
OPENING, CLOSING; OR CLEANING; BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
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B67B
APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
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7/00
Hand- or power-operated devices for opening closed containers
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B67B7/40
Devices for engaging tags, strips, or tongues for opening by tearing, e.g. slotted keys for opening sardine tins
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B67B7/403
adapted for engaging the ring of a pull tab for opening an aperture
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