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Gaines Alvin M: Magnetic closure. February 13, 1973: US3716091 (15 worldwide citation)

A magnetic closure for keycases, pocketbooks, wallets, and other containers which provides a positive opening as well as a closing by means of magnets with respective North and South poles so positioned as to bring opposite poles into proximity for positive closing and like poles into proximity for ...


2
Gaines Alvin M: Magnetic closure. Henry Patrick F, July 9, 1974: US3822906 (12 worldwide citation)

A magnetic closure for keycases, pocketbooks, wallets, and other containers which provides positive opening as well as a closing by means of magnets with respective North and South poles so positioned as to bring opposite poles into proximity for positive closing and like poles into proximity for op ...


3


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