Closure fasteners – Magnetic
Patent
1976-01-27
1977-11-15
Moore, Richard E.
Closure fasteners
Magnetic
248206R, 248206A, 211DIG1, E05C 1916
Patent
active
040583350
ABSTRACT:
This invention relates to a means for strengthening the power of the magnetic attraction of a magnetic sheet, having a certain but weak magnetic attraction.
REFERENCES:
patent: 2727650 (1955-12-01), Moynihan et al.
patent: 2967038 (1961-01-01), Lennemann
patent: 3260788 (1966-07-01), Stetson
patent: 3325639 (1967-06-01), King
patent: 3440748 (1969-04-01), Hackley
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