Inventor
LEWIS DUANE H
US7 patents
⚠️ This page may combine multiple inventors who share the name “LEWIS DUANE H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CONTINENTAL PLASTICS INC
6 patentsUS4463869AAug 7, 1984
Tamper-evident spice can lid
CONTINENTAL PLASTICS INC113 citations94
US4930647AJun 5, 1990
Tamper indicating closure system utilizing axially extending ratchet
CONTINENTAL PLASTICS INC37 citations92
US4823995AApr 25, 1989
Container cap
CONTINENTAL PLASTICS INC35 citations91
US4359171ANov 16, 1982
Container cover locking assembly
CONTINENTAL PLASTICS INC35 citations91
US4280636AJul 28, 1981
Container cover locking assembly
CONTINENTAL PLASTICS INC42 citations91
US4856665AAug 15, 1989
Tamper evident closure with hook-like locking tabs
CONTINENTAL PLASTICS INC21 citations81